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Finding the Fourth Proportional to 572,773.92, 790,406.04 and 318,141.36

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Solution

The fourth proportional to 572,773.92, 790,406.04 and 318,141.36 is: 439,022.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,773.92 : 790,406.04 = 318,141.36 : x
  2. Step 2: Convert to fraction form
    572,773.92/790,406.04 = 318,141.36/x
  3. Step 3: Cross multiply
    572,773.92x = 790,406.04 × 318,141.36
  4. Step 4: Simplify right side
    572,773.92x = 251,460,852,517.81
  5. Step 5: Solve for x
    x = 251,460,852,517.81/572,773.92
  6. Step 6: Final answer
    x = 439,022.87

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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.