Home / 487,454,153.61-672,686,732.04-278,614,780.29

Finding the Fourth Proportional to 487,454,153.61, 672,686,732.04 and 278,614,780.29

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Solution

The fourth proportional to 487,454,153.61, 672,686,732.04 and 278,614,780.29 is: 384,488,396.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,153.61 : 672,686,732.04 = 278,614,780.29 : x
  2. Step 2: Convert to fraction form
    487,454,153.61/672,686,732.04 = 278,614,780.29/x
  3. Step 3: Cross multiply
    487,454,153.61x = 672,686,732.04 × 278,614,780.29
  4. Step 4: Simplify right side
    487,454,153.61x = 187,420,466,051,322,720
  5. Step 5: Solve for x
    x = 187,420,466,051,322,720/487,454,153.61
  6. Step 6: Final answer
    x = 384,488,396.83

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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.