Home / 642,002.20-962,081.70-472,197.40

Finding the Fourth Proportional to 642,002.20, 962,081.70 and 472,197.40

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Solution

The fourth proportional to 642,002.20, 962,081.70 and 472,197.40 is: 707,618.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,002.20 : 962,081.70 = 472,197.40 : x
  2. Step 2: Convert to fraction form
    642,002.20/962,081.70 = 472,197.40/x
  3. Step 3: Cross multiply
    642,002.20x = 962,081.70 × 472,197.40
  4. Step 4: Simplify right side
    642,002.20x = 454,292,477,327.58
  5. Step 5: Solve for x
    x = 454,292,477,327.58/642,002.20
  6. Step 6: Final answer
    x = 707,618.26

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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.