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Finding the Fourth Proportional to 717,770.15, 990,545.23 and 411,902.48

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Solution

The fourth proportional to 717,770.15, 990,545.23 and 411,902.48 is: 568,438.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,770.15 : 990,545.23 = 411,902.48 : x
  2. Step 2: Convert to fraction form
    717,770.15/990,545.23 = 411,902.48/x
  3. Step 3: Cross multiply
    717,770.15x = 990,545.23 × 411,902.48
  4. Step 4: Simplify right side
    717,770.15x = 408,008,030,806.69
  5. Step 5: Solve for x
    x = 408,008,030,806.69/717,770.15
  6. Step 6: Final answer
    x = 568,438.28

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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.