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Finding the Fourth Proportional to 658,946.54, 988,419.81 and 344,018.54

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Solution

The fourth proportional to 658,946.54, 988,419.81 and 344,018.54 is: 516,027.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,946.54 : 988,419.81 = 344,018.54 : x
  2. Step 2: Convert to fraction form
    658,946.54/988,419.81 = 344,018.54/x
  3. Step 3: Cross multiply
    658,946.54x = 988,419.81 × 344,018.54
  4. Step 4: Simplify right side
    658,946.54x = 340,034,743,704.40
  5. Step 5: Solve for x
    x = 340,034,743,704.40/658,946.54
  6. Step 6: Final answer
    x = 516,027.81

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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.