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Finding the Fourth Proportional to 564,531.55, 779,065.11 and 319,516.30

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Solution

The fourth proportional to 564,531.55, 779,065.11 and 319,516.30 is: 440,939.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,531.55 : 779,065.11 = 319,516.30 : x
  2. Step 2: Convert to fraction form
    564,531.55/779,065.11 = 319,516.30/x
  3. Step 3: Cross multiply
    564,531.55x = 779,065.11 × 319,516.30
  4. Step 4: Simplify right side
    564,531.55x = 248,923,998,517.92
  5. Step 5: Solve for x
    x = 248,923,998,517.92/564,531.55
  6. Step 6: Final answer
    x = 440,939.04

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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.