Home / 521,133,645.80-781,700,468.70-265,798,836.20

Finding the Fourth Proportional to 521,133,645.80, 781,700,468.70 and 265,798,836.20

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Solution

The fourth proportional to 521,133,645.80, 781,700,468.70 and 265,798,836.20 is: 398,698,254.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,133,645.80 : 781,700,468.70 = 265,798,836.20 : x
  2. Step 2: Convert to fraction form
    521,133,645.80/781,700,468.70 = 265,798,836.20/x
  3. Step 3: Cross multiply
    521,133,645.80x = 781,700,468.70 × 265,798,836.20
  4. Step 4: Simplify right side
    521,133,645.80x = 207,775,074,837,454,528
  5. Step 5: Solve for x
    x = 207,775,074,837,454,528/521,133,645.80
  6. Step 6: Final answer
    x = 398,698,254.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.