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Finding the Fourth Proportional to 646,730.80, 970,096.20 and 609,989.20

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Solution

The fourth proportional to 646,730.80, 970,096.20 and 609,989.20 is: 914,983.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,730.80 : 970,096.20 = 609,989.20 : x
  2. Step 2: Convert to fraction form
    646,730.80/970,096.20 = 609,989.20/x
  3. Step 3: Cross multiply
    646,730.80x = 970,096.20 × 609,989.20
  4. Step 4: Simplify right side
    646,730.80x = 591,748,204,961.04
  5. Step 5: Solve for x
    x = 591,748,204,961.04/646,730.80
  6. Step 6: Final answer
    x = 914,983.80

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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.