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Finding the Fourth Proportional to 572,359.14, 859,381.92 and 320,133.78

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Solution

The fourth proportional to 572,359.14, 859,381.92 and 320,133.78 is: 480,672.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,359.14 : 859,381.92 = 320,133.78 : x
  2. Step 2: Convert to fraction form
    572,359.14/859,381.92 = 320,133.78/x
  3. Step 3: Cross multiply
    572,359.14x = 859,381.92 × 320,133.78
  4. Step 4: Simplify right side
    572,359.14x = 275,117,182,513.26
  5. Step 5: Solve for x
    x = 275,117,182,513.26/572,359.14
  6. Step 6: Final answer
    x = 480,672.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.