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Finding the Fourth Proportional to 617,805.46, 852,531.39 and 345,871.18

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Solution

The fourth proportional to 617,805.46, 852,531.39 and 345,871.18 is: 477,279.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,805.46 : 852,531.39 = 345,871.18 : x
  2. Step 2: Convert to fraction form
    617,805.46/852,531.39 = 345,871.18/x
  3. Step 3: Cross multiply
    617,805.46x = 852,531.39 × 345,871.18
  4. Step 4: Simplify right side
    617,805.46x = 294,866,037,846.34
  5. Step 5: Solve for x
    x = 294,866,037,846.34/617,805.46
  6. Step 6: Final answer
    x = 477,279.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.