Home / 487,454,154.61-672,686,733.42-278,614,781.29

Finding the Fourth Proportional to 487,454,154.61, 672,686,733.42 and 278,614,781.29

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Solution

The fourth proportional to 487,454,154.61, 672,686,733.42 and 278,614,781.29 is: 384,488,398.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,154.61 : 672,686,733.42 = 278,614,781.29 : x
  2. Step 2: Convert to fraction form
    487,454,154.61/672,686,733.42 = 278,614,781.29/x
  3. Step 3: Cross multiply
    487,454,154.61x = 672,686,733.42 × 278,614,781.29
  4. Step 4: Simplify right side
    487,454,154.61x = 187,420,467,108,497,824
  5. Step 5: Solve for x
    x = 187,420,467,108,497,824/487,454,154.61
  6. Step 6: Final answer
    x = 384,488,398.21

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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.