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Finding the Fourth Proportional to 567,221.72, 782,803.92 and 312,572.96

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Solution

The fourth proportional to 567,221.72, 782,803.92 and 312,572.96 is: 431,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,221.72 : 782,803.92 = 312,572.96 : x
  2. Step 2: Convert to fraction form
    567,221.72/782,803.92 = 312,572.96/x
  3. Step 3: Cross multiply
    567,221.72x = 782,803.92 × 312,572.96
  4. Step 4: Simplify right side
    567,221.72x = 244,683,338,374.00
  5. Step 5: Solve for x
    x = 244,683,338,374.00/567,221.72
  6. Step 6: Final answer
    x = 431,371.60

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1.5x scale

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.