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Finding the Fourth Proportional to 452,045.34, 678,057.08 and 115,086.72

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Solution

The fourth proportional to 452,045.34, 678,057.08 and 115,086.72 is: 172,627.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,045.34 : 678,057.08 = 115,086.72 : x
  2. Step 2: Convert to fraction form
    452,045.34/678,057.08 = 115,086.72/x
  3. Step 3: Cross multiply
    452,045.34x = 678,057.08 × 115,086.72
  4. Step 4: Simplify right side
    452,045.34x = 78,035,367,277.26
  5. Step 5: Solve for x
    x = 78,035,367,277.26/452,045.34
  6. Step 6: Final answer
    x = 172,627.30

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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.