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Finding the Fourth Proportional to 474,663.40, 712,487.46 and 317,986.72

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Solution

The fourth proportional to 474,663.40, 712,487.46 and 317,986.72 is: 477,309.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,663.40 : 712,487.46 = 317,986.72 : x
  2. Step 2: Convert to fraction form
    474,663.40/712,487.46 = 317,986.72/x
  3. Step 3: Cross multiply
    474,663.40x = 712,487.46 × 317,986.72
  4. Step 4: Simplify right side
    474,663.40x = 226,561,550,446.53
  5. Step 5: Solve for x
    x = 226,561,550,446.53/474,663.40
  6. Step 6: Final answer
    x = 477,309.92

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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.