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Finding the Fourth Proportional to 406,125.40, 609,245.70 and 125,613.40

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Solution

The fourth proportional to 406,125.40, 609,245.70 and 125,613.40 is: 188,437.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,125.40 : 609,245.70 = 125,613.40 : x
  2. Step 2: Convert to fraction form
    406,125.40/609,245.70 = 125,613.40/x
  3. Step 3: Cross multiply
    406,125.40x = 609,245.70 × 125,613.40
  4. Step 4: Simplify right side
    406,125.40x = 76,529,423,812.38
  5. Step 5: Solve for x
    x = 76,529,423,812.38/406,125.40
  6. Step 6: Final answer
    x = 188,437.92

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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.