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Finding the Fourth Proportional to 574,009.80, 861,014.70 and 512,008.35

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Solution

The fourth proportional to 574,009.80, 861,014.70 and 512,008.35 is: 768,012.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,009.80 : 861,014.70 = 512,008.35 : x
  2. Step 2: Convert to fraction form
    574,009.80/861,014.70 = 512,008.35/x
  3. Step 3: Cross multiply
    574,009.80x = 861,014.70 × 512,008.35
  4. Step 4: Simplify right side
    574,009.80x = 440,846,715,872.75
  5. Step 5: Solve for x
    x = 440,846,715,872.75/574,009.80
  6. Step 6: Final answer
    x = 768,012.53

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Double scale
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Similar ratio
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1.5x scale

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.