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Finding the Fourth Proportional to 573,053.88, 790,863.66 and 318,456.12

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Solution

The fourth proportional to 573,053.88, 790,863.66 and 318,456.12 is: 439,496.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,053.88 : 790,863.66 = 318,456.12 : x
  2. Step 2: Convert to fraction form
    573,053.88/790,863.66 = 318,456.12/x
  3. Step 3: Cross multiply
    573,053.88x = 790,863.66 × 318,456.12
  4. Step 4: Simplify right side
    573,053.88x = 251,855,372,612.60
  5. Step 5: Solve for x
    x = 251,855,372,612.60/573,053.88
  6. Step 6: Final answer
    x = 439,496.85

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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.