Home / 642,135.20-962,281.20-472,330.40

Finding the Fourth Proportional to 642,135.20, 962,281.20 and 472,330.40

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Solution

The fourth proportional to 642,135.20, 962,281.20 and 472,330.40 is: 707,817.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,135.20 : 962,281.20 = 472,330.40 : x
  2. Step 2: Convert to fraction form
    642,135.20/962,281.20 = 472,330.40/x
  3. Step 3: Cross multiply
    642,135.20x = 962,281.20 × 472,330.40
  4. Step 4: Simplify right side
    642,135.20x = 454,514,664,108.48
  5. Step 5: Solve for x
    x = 454,514,664,108.48/642,135.20
  6. Step 6: Final answer
    x = 707,817.71

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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.