Home / 880,809.32-1,215,510.18-478,404.20

Finding the Fourth Proportional to 880,809.32, 1,215,510.18 and 478,404.20

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Solution

The fourth proportional to 880,809.32, 1,215,510.18 and 478,404.20 is: 660,194.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,809.32 : 1,215,510.18 = 478,404.20 : x
  2. Step 2: Convert to fraction form
    880,809.32/1,215,510.18 = 478,404.20/x
  3. Step 3: Cross multiply
    880,809.32x = 1,215,510.18 × 478,404.20
  4. Step 4: Simplify right side
    880,809.32x = 581,505,175,254.76
  5. Step 5: Solve for x
    x = 581,505,175,254.76/880,809.32
  6. Step 6: Final answer
    x = 660,194.17

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Double scale
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Similar ratio
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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.