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Finding the Fourth Proportional to 406,955.52, 610,431.36 and 126,472.32

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Solution

The fourth proportional to 406,955.52, 610,431.36 and 126,472.32 is: 189,707.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,955.52 : 610,431.36 = 126,472.32 : x
  2. Step 2: Convert to fraction form
    406,955.52/610,431.36 = 126,472.32/x
  3. Step 3: Cross multiply
    406,955.52x = 610,431.36 × 126,472.32
  4. Step 4: Simplify right side
    406,955.52x = 77,202,670,299.96
  5. Step 5: Solve for x
    x = 77,202,670,299.96/406,955.52
  6. Step 6: Final answer
    x = 189,707.88

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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.