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Finding the Fourth Proportional to 717,522, 990,180.40 and 415,890.96

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Solution

The fourth proportional to 717,522, 990,180.40 and 415,890.96 is: 573,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,522 : 990,180.40 = 415,890.96 : x
  2. Step 2: Convert to fraction form
    717,522/990,180.40 = 415,890.96/x
  3. Step 3: Cross multiply
    717,522x = 990,180.40 × 415,890.96
  4. Step 4: Simplify right side
    717,522x = 411,807,077,129.18
  5. Step 5: Solve for x
    x = 411,807,077,129.18/717,522
  6. Step 6: Final answer
    x = 573,929.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.