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Finding the Fourth Proportional to 406,123.40, 609,242.70 and 125,611.40

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Solution

The fourth proportional to 406,123.40, 609,242.70 and 125,611.40 is: 188,434.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,123.40 : 609,242.70 = 125,611.40 : x
  2. Step 2: Convert to fraction form
    406,123.40/609,242.70 = 125,611.40/x
  3. Step 3: Cross multiply
    406,123.40x = 609,242.70 × 125,611.40
  4. Step 4: Simplify right side
    406,123.40x = 76,527,828,486.78
  5. Step 5: Solve for x
    x = 76,527,828,486.78/406,123.40
  6. Step 6: Final answer
    x = 188,434.92

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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.