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Finding the Fourth Proportional to 664,257.60, 996,386.40 and 439,871.40

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Solution

The fourth proportional to 664,257.60, 996,386.40 and 439,871.40 is: 659,807.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,257.60 : 996,386.40 = 439,871.40 : x
  2. Step 2: Convert to fraction form
    664,257.60/996,386.40 = 439,871.40/x
  3. Step 3: Cross multiply
    664,257.60x = 996,386.40 × 439,871.40
  4. Step 4: Simplify right side
    664,257.60x = 438,281,880,708.96
  5. Step 5: Solve for x
    x = 438,281,880,708.96/664,257.60
  6. Step 6: Final answer
    x = 659,807.10

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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.