Home / 487,454,152.20-672,686,730.06-278,614,778.94

Finding the Fourth Proportional to 487,454,152.20, 672,686,730.06 and 278,614,778.94

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Solution

The fourth proportional to 487,454,152.20, 672,686,730.06 and 278,614,778.94 is: 384,488,394.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,152.20 : 672,686,730.06 = 278,614,778.94 : x
  2. Step 2: Convert to fraction form
    487,454,152.20/672,686,730.06 = 278,614,778.94/x
  3. Step 3: Cross multiply
    487,454,152.20x = 672,686,730.06 × 278,614,778.94
  4. Step 4: Simplify right side
    487,454,152.20x = 187,420,464,591,538,336
  5. Step 5: Solve for x
    x = 187,420,464,591,538,336/487,454,152.20
  6. Step 6: Final answer
    x = 384,488,394.95

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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.