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Finding the Fourth Proportional to 606,431.80, 910,230.90 and 307,250.20

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Solution

The fourth proportional to 606,431.80, 910,230.90 and 307,250.20 is: 461,170.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,431.80 : 910,230.90 = 307,250.20 : x
  2. Step 2: Convert to fraction form
    606,431.80/910,230.90 = 307,250.20/x
  3. Step 3: Cross multiply
    606,431.80x = 910,230.90 × 307,250.20
  4. Step 4: Simplify right side
    606,431.80x = 279,668,626,071.18
  5. Step 5: Solve for x
    x = 279,668,626,071.18/606,431.80
  6. Step 6: Final answer
    x = 461,170.78

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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.