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Finding the Fourth Proportional to 452,449.16, 678,673 and 115,489.76

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Solution

The fourth proportional to 452,449.16, 678,673 and 115,489.76 is: 173,234.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,449.16 : 678,673 = 115,489.76 : x
  2. Step 2: Convert to fraction form
    452,449.16/678,673 = 115,489.76/x
  3. Step 3: Cross multiply
    452,449.16x = 678,673 × 115,489.76
  4. Step 4: Simplify right side
    452,449.16x = 78,379,781,888.48
  5. Step 5: Solve for x
    x = 78,379,781,888.48/452,449.16
  6. Step 6: Final answer
    x = 173,234.45

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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.