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Finding the Fourth Proportional to 567,251.88, 782,807.76 and 309,128.90

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Solution

The fourth proportional to 567,251.88, 782,807.76 and 309,128.90 is: 426,597.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,251.88 : 782,807.76 = 309,128.90 : x
  2. Step 2: Convert to fraction form
    567,251.88/782,807.76 = 309,128.90/x
  3. Step 3: Cross multiply
    567,251.88x = 782,807.76 × 309,128.90
  4. Step 4: Simplify right side
    567,251.88x = 241,988,501,760.26
  5. Step 5: Solve for x
    x = 241,988,501,760.26/567,251.88
  6. Step 6: Final answer
    x = 426,597.97

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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.