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Finding the Fourth Proportional to 514,877,891.20, 772,316,836.80 and 514,877,891.20

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Solution

The fourth proportional to 514,877,891.20, 772,316,836.80 and 514,877,891.20 is: 772,316,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,877,891.20 : 772,316,836.80 = 514,877,891.20 : x
  2. Step 2: Convert to fraction form
    514,877,891.20/772,316,836.80 = 514,877,891.20/x
  3. Step 3: Cross multiply
    514,877,891.20x = 772,316,836.80 × 514,877,891.20
  4. Step 4: Simplify right side
    514,877,891.20x = 397,648,864,269,838,528
  5. Step 5: Solve for x
    x = 397,648,864,269,838,528/514,877,891.20
  6. Step 6: Final answer
    x = 772,316,836.80

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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.