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Finding the Fourth Proportional to 659,430.60, 989,145.90 and 652,432.20

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Solution

The fourth proportional to 659,430.60, 989,145.90 and 652,432.20 is: 978,648.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,430.60 : 989,145.90 = 652,432.20 : x
  2. Step 2: Convert to fraction form
    659,430.60/989,145.90 = 652,432.20/x
  3. Step 3: Cross multiply
    659,430.60x = 989,145.90 × 652,432.20
  4. Step 4: Simplify right side
    659,430.60x = 645,350,635,657.98
  5. Step 5: Solve for x
    x = 645,350,635,657.98/659,430.60
  6. Step 6: Final answer
    x = 978,648.30

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Double scale
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Similar ratio
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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.