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Finding the Fourth Proportional to 718,598.73, 991,623.42 and 412,724.91

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Solution

The fourth proportional to 718,598.73, 991,623.42 and 412,724.91 is: 569,535.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,598.73 : 991,623.42 = 412,724.91 : x
  2. Step 2: Convert to fraction form
    718,598.73/991,623.42 = 412,724.91/x
  3. Step 3: Cross multiply
    718,598.73x = 991,623.42 × 412,724.91
  4. Step 4: Simplify right side
    718,598.73x = 409,267,686,773.39
  5. Step 5: Solve for x
    x = 409,267,686,773.39/718,598.73
  6. Step 6: Final answer
    x = 569,535.78

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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.