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Finding the Fourth Proportional to 659,497.60, 989,246.40 and 327,030.40

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Solution

The fourth proportional to 659,497.60, 989,246.40 and 327,030.40 is: 490,545.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,497.60 : 989,246.40 = 327,030.40 : x
  2. Step 2: Convert to fraction form
    659,497.60/989,246.40 = 327,030.40/x
  3. Step 3: Cross multiply
    659,497.60x = 989,246.40 × 327,030.40
  4. Step 4: Simplify right side
    659,497.60x = 323,513,645,890.56
  5. Step 5: Solve for x
    x = 323,513,645,890.56/659,497.60
  6. Step 6: Final answer
    x = 490,545.60

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Double scale
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Similar ratio
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1.5x scale

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.