Home / 487,454,139.29-672,686,712.23-278,614,765.96

Finding the Fourth Proportional to 487,454,139.29, 672,686,712.23 and 278,614,765.96

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Solution

The fourth proportional to 487,454,139.29, 672,686,712.23 and 278,614,765.96 is: 384,488,377.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,139.29 : 672,686,712.23 = 278,614,765.96 : x
  2. Step 2: Convert to fraction form
    487,454,139.29/672,686,712.23 = 278,614,765.96/x
  3. Step 3: Cross multiply
    487,454,139.29x = 672,686,712.23 × 278,614,765.96
  4. Step 4: Simplify right side
    487,454,139.29x = 187,420,450,889,288,512
  5. Step 5: Solve for x
    x = 187,420,450,889,288,512/487,454,139.29
  6. Step 6: Final answer
    x = 384,488,377.02

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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.