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Finding the Fourth Proportional to 717,369.66, 989,995.50 and 395,104.29

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Solution

The fourth proportional to 717,369.66, 989,995.50 and 395,104.29 is: 545,257.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,369.66 : 989,995.50 = 395,104.29 : x
  2. Step 2: Convert to fraction form
    717,369.66/989,995.50 = 395,104.29/x
  3. Step 3: Cross multiply
    717,369.66x = 989,995.50 × 395,104.29
  4. Step 4: Simplify right side
    717,369.66x = 391,151,469,130.70
  5. Step 5: Solve for x
    x = 391,151,469,130.70/717,369.66
  6. Step 6: Final answer
    x = 545,257.89

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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.