Home / 659,211.60-988,817.40-215,979.60

Finding the Fourth Proportional to 659,211.60, 988,817.40 and 215,979.60

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Solution

The fourth proportional to 659,211.60, 988,817.40 and 215,979.60 is: 323,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,211.60 : 988,817.40 = 215,979.60 : x
  2. Step 2: Convert to fraction form
    659,211.60/988,817.40 = 215,979.60/x
  3. Step 3: Cross multiply
    659,211.60x = 988,817.40 × 215,979.60
  4. Step 4: Simplify right side
    659,211.60x = 213,564,386,525.04
  5. Step 5: Solve for x
    x = 213,564,386,525.04/659,211.60
  6. Step 6: Final answer
    x = 323,969.40

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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.