Home / 487,454,149.85-672,686,726.86-278,614,776.53

Finding the Fourth Proportional to 487,454,149.85, 672,686,726.86 and 278,614,776.53

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Solution

The fourth proportional to 487,454,149.85, 672,686,726.86 and 278,614,776.53 is: 384,488,391.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,149.85 : 672,686,726.86 = 278,614,776.53 : x
  2. Step 2: Convert to fraction form
    487,454,149.85/672,686,726.86 = 278,614,776.53/x
  3. Step 3: Cross multiply
    487,454,149.85x = 672,686,726.86 × 278,614,776.53
  4. Step 4: Simplify right side
    487,454,149.85x = 187,420,462,079,341,152
  5. Step 5: Solve for x
    x = 187,420,462,079,341,152/487,454,149.85
  6. Step 6: Final answer
    x = 384,488,391.65

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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.