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Finding the Fourth Proportional to 1,942,920.29, 2,914,385.92 and 745,209.74

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Solution

The fourth proportional to 1,942,920.29, 2,914,385.92 and 745,209.74 is: 1,117,816.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942,920.29 : 2,914,385.92 = 745,209.74 : x
  2. Step 2: Convert to fraction form
    1,942,920.29/2,914,385.92 = 745,209.74/x
  3. Step 3: Cross multiply
    1,942,920.29x = 2,914,385.92 × 745,209.74
  4. Step 4: Simplify right side
    1,942,920.29x = 2,171,828,779,125.80
  5. Step 5: Solve for x
    x = 2,171,828,779,125.80/1,942,920.29
  6. Step 6: Final answer
    x = 1,117,816.72

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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.