Home / 487,454,151.70-672,686,729.37-278,614,778.44

Finding the Fourth Proportional to 487,454,151.70, 672,686,729.37 and 278,614,778.44

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Solution

The fourth proportional to 487,454,151.70, 672,686,729.37 and 278,614,778.44 is: 384,488,394.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,151.70 : 672,686,729.37 = 278,614,778.44 : x
  2. Step 2: Convert to fraction form
    487,454,151.70/672,686,729.37 = 278,614,778.44/x
  3. Step 3: Cross multiply
    487,454,151.70x = 672,686,729.37 × 278,614,778.44
  4. Step 4: Simplify right side
    487,454,151.70x = 187,420,464,062,950,784
  5. Step 5: Solve for x
    x = 187,420,464,062,950,784/487,454,151.70
  6. Step 6: Final answer
    x = 384,488,394.26

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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.