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Finding the Fourth Proportional to 717,481.50, 990,124.47 and 415,850.46

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Solution

The fourth proportional to 717,481.50, 990,124.47 and 415,850.46 is: 573,873.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,481.50 : 990,124.47 = 415,850.46 : x
  2. Step 2: Convert to fraction form
    717,481.50/990,124.47 = 415,850.46/x
  3. Step 3: Cross multiply
    717,481.50x = 990,124.47 × 415,850.46
  4. Step 4: Simplify right side
    717,481.50x = 411,743,716,306.76
  5. Step 5: Solve for x
    x = 411,743,716,306.76/717,481.50
  6. Step 6: Final answer
    x = 573,873.63

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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.