Home / 487,454,137.04-672,686,709.11-278,614,763.72

Finding the Fourth Proportional to 487,454,137.04, 672,686,709.11 and 278,614,763.72

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Solution

The fourth proportional to 487,454,137.04, 672,686,709.11 and 278,614,763.72 is: 384,488,373.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,137.04 : 672,686,709.11 = 278,614,763.72 : x
  2. Step 2: Convert to fraction form
    487,454,137.04/672,686,709.11 = 278,614,763.72/x
  3. Step 3: Cross multiply
    487,454,137.04x = 672,686,709.11 × 278,614,763.72
  4. Step 4: Simplify right side
    487,454,137.04x = 187,420,448,514,375,872
  5. Step 5: Solve for x
    x = 187,420,448,514,375,872/487,454,137.04
  6. Step 6: Final answer
    x = 384,488,373.93

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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.