Home / 535,909.31-739,527.69-318,127.30

Finding the Fourth Proportional to 535,909.31, 739,527.69 and 318,127.30

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Solution

The fourth proportional to 535,909.31, 739,527.69 and 318,127.30 is: 438,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,909.31 : 739,527.69 = 318,127.30 : x
  2. Step 2: Convert to fraction form
    535,909.31/739,527.69 = 318,127.30/x
  3. Step 3: Cross multiply
    535,909.31x = 739,527.69 × 318,127.30
  4. Step 4: Simplify right side
    535,909.31x = 235,263,945,446.12
  5. Step 5: Solve for x
    x = 235,263,945,446.12/535,909.31
  6. Step 6: Final answer
    x = 438,999.55

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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.