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Finding the Fourth Proportional to 474,280.29, 711,901.36 and 420,589.54

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Solution

The fourth proportional to 474,280.29, 711,901.36 and 420,589.54 is: 631,310.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,280.29 : 711,901.36 = 420,589.54 : x
  2. Step 2: Convert to fraction form
    474,280.29/711,901.36 = 420,589.54/x
  3. Step 3: Cross multiply
    474,280.29x = 711,901.36 × 420,589.54
  4. Step 4: Simplify right side
    474,280.29x = 299,418,263,424.83
  5. Step 5: Solve for x
    x = 299,418,263,424.83/474,280.29
  6. Step 6: Final answer
    x = 631,310.79

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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.