Home / 738,545.28-1,019,193.21-399,013.80

Finding the Fourth Proportional to 738,545.28, 1,019,193.21 and 399,013.80

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Solution

The fourth proportional to 738,545.28, 1,019,193.21 and 399,013.80 is: 550,639.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,545.28 : 1,019,193.21 = 399,013.80 : x
  2. Step 2: Convert to fraction form
    738,545.28/1,019,193.21 = 399,013.80/x
  3. Step 3: Cross multiply
    738,545.28x = 1,019,193.21 × 399,013.80
  4. Step 4: Simplify right side
    738,545.28x = 406,672,155,656.30
  5. Step 5: Solve for x
    x = 406,672,155,656.30/738,545.28
  6. Step 6: Final answer
    x = 550,639.43

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1.5x scale

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.