Home / 487,454,141.30-672,686,714.98-278,614,767.96

Finding the Fourth Proportional to 487,454,141.30, 672,686,714.98 and 278,614,767.96

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Solution

The fourth proportional to 487,454,141.30, 672,686,714.98 and 278,614,767.96 is: 384,488,379.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,454,141.30 : 672,686,714.98 = 278,614,767.96 : x
  2. Step 2: Convert to fraction form
    487,454,141.30/672,686,714.98 = 278,614,767.96/x
  3. Step 3: Cross multiply
    487,454,141.30x = 672,686,714.98 × 278,614,767.96
  4. Step 4: Simplify right side
    487,454,141.30x = 187,420,453,003,927,360
  5. Step 5: Solve for x
    x = 187,420,453,003,927,360/487,454,141.30
  6. Step 6: Final answer
    x = 384,488,379.78

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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.