Home / 487,454,157.29-672,686,737.07-278,614,783.96

Finding the Fourth Proportional to 487,454,157.29, 672,686,737.07 and 278,614,783.96

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Solution

The fourth proportional to 487,454,157.29, 672,686,737.07 and 278,614,783.96 is: 384,488,401.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,157.29 : 672,686,737.07 = 278,614,783.96 : x
  2. Step 2: Convert to fraction form
    487,454,157.29/672,686,737.07 = 278,614,783.96/x
  3. Step 3: Cross multiply
    487,454,157.29x = 672,686,737.07 × 278,614,783.96
  4. Step 4: Simplify right side
    487,454,157.29x = 187,420,469,918,440,576
  5. Step 5: Solve for x
    x = 187,420,469,918,440,576/487,454,157.29
  6. Step 6: Final answer
    x = 384,488,401.86

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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.