Home / 1,217,282,643.50-1,679,708,330.15-681,463,649.16

Finding the Fourth Proportional to 1,217,282,643.50, 1,679,708,330.15 and 681,463,649.16

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Solution

The fourth proportional to 1,217,282,643.50, 1,679,708,330.15 and 681,463,649.16 is: 940,340,498.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,282,643.50 : 1,679,708,330.15 = 681,463,649.16 : x
  2. Step 2: Convert to fraction form
    1,217,282,643.50/1,679,708,330.15 = 681,463,649.16/x
  3. Step 3: Cross multiply
    1,217,282,643.50x = 1,679,708,330.15 × 681,463,649.16
  4. Step 4: Simplify right side
    1,217,282,643.50x = 1,144,660,168,185,061,632
  5. Step 5: Solve for x
    x = 1,144,660,168,185,061,632/1,217,282,643.50
  6. Step 6: Final answer
    x = 940,340,498.82

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Half scale
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Double scale
Find fourth proportional to 1,217,282,644.50, 1,679,708,331.52 and 681,463,650.16
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.