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Finding the Fourth Proportional to 642,277.20, 962,494.20 and 472,472.40

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Solution

The fourth proportional to 642,277.20, 962,494.20 and 472,472.40 is: 708,030.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,277.20 : 962,494.20 = 472,472.40 : x
  2. Step 2: Convert to fraction form
    642,277.20/962,494.20 = 472,472.40/x
  3. Step 3: Cross multiply
    642,277.20x = 962,494.20 × 472,472.40
  4. Step 4: Simplify right side
    642,277.20x = 454,751,944,660.08
  5. Step 5: Solve for x
    x = 454,751,944,660.08/642,277.20
  6. Step 6: Final answer
    x = 708,030.65

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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.