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Finding the Fourth Proportional to 452,574.34, 678,861.50 and 115,615.74

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Solution

The fourth proportional to 452,574.34, 678,861.50 and 115,615.74 is: 173,423.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,574.34 : 678,861.50 = 115,615.74 : x
  2. Step 2: Convert to fraction form
    452,574.34/678,861.50 = 115,615.74/x
  3. Step 3: Cross multiply
    452,574.34x = 678,861.50 × 115,615.74
  4. Step 4: Simplify right side
    452,574.34x = 78,487,074,680.01
  5. Step 5: Solve for x
    x = 78,487,074,680.01/452,574.34
  6. Step 6: Final answer
    x = 173,423.61

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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.