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Finding the Fourth Proportional to 669,866.40, 1,003,244.40 and 654,314.40

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Solution

The fourth proportional to 669,866.40, 1,003,244.40 and 654,314.40 is: 979,952.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,866.40 : 1,003,244.40 = 654,314.40 : x
  2. Step 2: Convert to fraction form
    669,866.40/1,003,244.40 = 654,314.40/x
  3. Step 3: Cross multiply
    669,866.40x = 1,003,244.40 × 654,314.40
  4. Step 4: Simplify right side
    669,866.40x = 656,437,257,639.36
  5. Step 5: Solve for x
    x = 656,437,257,639.36/669,866.40
  6. Step 6: Final answer
    x = 979,952.51

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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.