Home / 431,487,138.60-647,249,600.70-124,810,252.20

Finding the Fourth Proportional to 431,487,138.60, 647,249,600.70 and 124,810,252.20

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Solution

The fourth proportional to 431,487,138.60, 647,249,600.70 and 124,810,252.20 is: 187,220,843.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,487,138.60 : 647,249,600.70 = 124,810,252.20 : x
  2. Step 2: Convert to fraction form
    431,487,138.60/647,249,600.70 = 124,810,252.20/x
  3. Step 3: Cross multiply
    431,487,138.60x = 647,249,600.70 × 124,810,252.20
  4. Step 4: Simplify right side
    431,487,138.60x = 80,783,385,899,716,304
  5. Step 5: Solve for x
    x = 80,783,385,899,716,304/431,487,138.60
  6. Step 6: Final answer
    x = 187,220,843.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.