Home / 487,454,156.62-672,686,736.18-278,614,783.30

Finding the Fourth Proportional to 487,454,156.62, 672,686,736.18 and 278,614,783.30

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Solution

The fourth proportional to 487,454,156.62, 672,686,736.18 and 278,614,783.30 is: 384,488,400.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,156.62 : 672,686,736.18 = 278,614,783.30 : x
  2. Step 2: Convert to fraction form
    487,454,156.62/672,686,736.18 = 278,614,783.30/x
  3. Step 3: Cross multiply
    487,454,156.62x = 672,686,736.18 × 278,614,783.30
  4. Step 4: Simplify right side
    487,454,156.62x = 187,420,469,229,574,976
  5. Step 5: Solve for x
    x = 187,420,469,229,574,976/487,454,156.62
  6. Step 6: Final answer
    x = 384,488,400.98

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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.