Home / 515,014,591.29-710,725,196.91-280,070,357.19

Finding the Fourth Proportional to 515,014,591.29, 710,725,196.91 and 280,070,357.19

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Solution

The fourth proportional to 515,014,591.29, 710,725,196.91 and 280,070,357.19 is: 386,499,845.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,014,591.29 : 710,725,196.91 = 280,070,357.19 : x
  2. Step 2: Convert to fraction form
    515,014,591.29/710,725,196.91 = 280,070,357.19/x
  3. Step 3: Cross multiply
    515,014,591.29x = 710,725,196.91 × 280,070,357.19
  4. Step 4: Simplify right side
    515,014,591.29x = 199,053,059,762,516,768
  5. Step 5: Solve for x
    x = 199,053,059,762,516,768/515,014,591.29
  6. Step 6: Final answer
    x = 386,499,845.11

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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.