Home / 487,904,021.83-672,657,245.83-387,766,836.21

Finding the Fourth Proportional to 487,904,021.83, 672,657,245.83 and 387,766,836.21

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Solution

The fourth proportional to 487,904,021.83, 672,657,245.83 and 387,766,836.21 is: 534,601,397.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,904,021.83 : 672,657,245.83 = 387,766,836.21 : x
  2. Step 2: Convert to fraction form
    487,904,021.83/672,657,245.83 = 387,766,836.21/x
  3. Step 3: Cross multiply
    487,904,021.83x = 672,657,245.83 × 387,766,836.21
  4. Step 4: Simplify right side
    487,904,021.83x = 260,834,172,072,238,464
  5. Step 5: Solve for x
    x = 260,834,172,072,238,464/487,904,021.83
  6. Step 6: Final answer
    x = 534,601,397.82

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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.