Home / 442,138,836.20-663,208,254.30-399,092,115.20

Finding the Fourth Proportional to 442,138,836.20, 663,208,254.30 and 399,092,115.20

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Solution

The fourth proportional to 442,138,836.20, 663,208,254.30 and 399,092,115.20 is: 598,638,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,138,836.20 : 663,208,254.30 = 399,092,115.20 : x
  2. Step 2: Convert to fraction form
    442,138,836.20/663,208,254.30 = 399,092,115.20/x
  3. Step 3: Cross multiply
    442,138,836.20x = 663,208,254.30 × 399,092,115.20
  4. Step 4: Simplify right side
    442,138,836.20x = 264,681,185,026,686,464
  5. Step 5: Solve for x
    x = 264,681,185,026,686,464/442,138,836.20
  6. Step 6: Final answer
    x = 598,638,172.80

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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.