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Finding the Fourth Proportional to 882,688.80, 1,322,672.40 and 656,990.40

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Solution

The fourth proportional to 882,688.80, 1,322,672.40 and 656,990.40 is: 984,472.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    882,688.80 : 1,322,672.40 = 656,990.40 : x
  2. Step 2: Convert to fraction form
    882,688.80/1,322,672.40 = 656,990.40/x
  3. Step 3: Cross multiply
    882,688.80x = 1,322,672.40 × 656,990.40
  4. Step 4: Simplify right side
    882,688.80x = 868,983,069,144.96
  5. Step 5: Solve for x
    x = 868,983,069,144.96/882,688.80
  6. Step 6: Final answer
    x = 984,472.75

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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.