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Finding the Fourth Proportional to 717,866, 990,655.08 and 416,234.96

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Solution

The fourth proportional to 717,866, 990,655.08 and 416,234.96 is: 574,404.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,866 : 990,655.08 = 416,234.96 : x
  2. Step 2: Convert to fraction form
    717,866/990,655.08 = 416,234.96/x
  3. Step 3: Cross multiply
    717,866x = 990,655.08 × 416,234.96
  4. Step 4: Simplify right side
    717,866x = 412,345,277,597.60
  5. Step 5: Solve for x
    x = 412,345,277,597.60/717,866
  6. Step 6: Final answer
    x = 574,404.24

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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.