Home / 641,737.40-885,319.62-386,947.04

Finding the Fourth Proportional to 641,737.40, 885,319.62 and 386,947.04

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Solution

The fourth proportional to 641,737.40, 885,319.62 and 386,947.04 is: 533,819.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,737.40 : 885,319.62 = 386,947.04 : x
  2. Step 2: Convert to fraction form
    641,737.40/885,319.62 = 386,947.04/x
  3. Step 3: Cross multiply
    641,737.40x = 885,319.62 × 386,947.04
  4. Step 4: Simplify right side
    641,737.40x = 342,571,806,412.93
  5. Step 5: Solve for x
    x = 342,571,806,412.93/641,737.40
  6. Step 6: Final answer
    x = 533,819.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.