Home / 1,288,616,133.24-1,778,240,205.12-787,663,682.16

Finding the Fourth Proportional to 1,288,616,133.24, 1,778,240,205.12 and 787,663,682.16

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Solution

The fourth proportional to 1,288,616,133.24, 1,778,240,205.12 and 787,663,682.16 is: 1,086,945,283.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,616,133.24 : 1,778,240,205.12 = 787,663,682.16 : x
  2. Step 2: Convert to fraction form
    1,288,616,133.24/1,778,240,205.12 = 787,663,682.16/x
  3. Step 3: Cross multiply
    1,288,616,133.24x = 1,778,240,205.12 × 787,663,682.16
  4. Step 4: Simplify right side
    1,288,616,133.24x = 1,400,655,227,729,772,800
  5. Step 5: Solve for x
    x = 1,400,655,227,729,772,800/1,288,616,133.24
  6. Step 6: Final answer
    x = 1,086,945,283.08

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Double scale
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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.