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Finding the Fourth Proportional to 566,319.70, 781,407.89 and 324,678.07

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Solution

The fourth proportional to 566,319.70, 781,407.89 and 324,678.07 is: 447,990.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,319.70 : 781,407.89 = 324,678.07 : x
  2. Step 2: Convert to fraction form
    566,319.70/781,407.89 = 324,678.07/x
  3. Step 3: Cross multiply
    566,319.70x = 781,407.89 × 324,678.07
  4. Step 4: Simplify right side
    566,319.70x = 253,706,001,700.93
  5. Step 5: Solve for x
    x = 253,706,001,700.93/566,319.70
  6. Step 6: Final answer
    x = 447,990.78

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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.