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Finding the Fourth Proportional to 717,380.71, 989,953.44 and 411,237.61

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Solution

The fourth proportional to 717,380.71, 989,953.44 and 411,237.61 is: 567,489.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,380.71 : 989,953.44 = 411,237.61 : x
  2. Step 2: Convert to fraction form
    717,380.71/989,953.44 = 411,237.61/x
  3. Step 3: Cross multiply
    717,380.71x = 989,953.44 × 411,237.61
  4. Step 4: Simplify right side
    717,380.71x = 407,106,082,659.85
  5. Step 5: Solve for x
    x = 407,106,082,659.85/717,380.71
  6. Step 6: Final answer
    x = 567,489.59

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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.