Home / 749,545.34-1,122,516.45-428,724.59

Finding the Fourth Proportional to 749,545.34, 1,122,516.45 and 428,724.59

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Solution

The fourth proportional to 749,545.34, 1,122,516.45 and 428,724.59 is: 642,056.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,545.34 : 1,122,516.45 = 428,724.59 : x
  2. Step 2: Convert to fraction form
    749,545.34/1,122,516.45 = 428,724.59/x
  3. Step 3: Cross multiply
    749,545.34x = 1,122,516.45 × 428,724.59
  4. Step 4: Simplify right side
    749,545.34x = 481,250,399,181.92
  5. Step 5: Solve for x
    x = 481,250,399,181.92/749,545.34
  6. Step 6: Final answer
    x = 642,056.43

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Double scale
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1.5x scale

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.