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Finding the Fourth Proportional to 406,679.40, 610,100.46 and 140,449.56

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Solution

The fourth proportional to 406,679.40, 610,100.46 and 140,449.56 is: 210,702.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,679.40 : 610,100.46 = 140,449.56 : x
  2. Step 2: Convert to fraction form
    406,679.40/610,100.46 = 140,449.56/x
  3. Step 3: Cross multiply
    406,679.40x = 610,100.46 × 140,449.56
  4. Step 4: Simplify right side
    406,679.40x = 85,688,341,162.80
  5. Step 5: Solve for x
    x = 85,688,341,162.80/406,679.40
  6. Step 6: Final answer
    x = 210,702.44

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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.