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Finding the Fourth Proportional to 615,861.88, 849,872.80 and 343,922.20

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Solution

The fourth proportional to 615,861.88, 849,872.80 and 343,922.20 is: 474,603.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,861.88 : 849,872.80 = 343,922.20 : x
  2. Step 2: Convert to fraction form
    615,861.88/849,872.80 = 343,922.20/x
  3. Step 3: Cross multiply
    615,861.88x = 849,872.80 × 343,922.20
  4. Step 4: Simplify right side
    615,861.88x = 292,290,123,096.16
  5. Step 5: Solve for x
    x = 292,290,123,096.16/615,861.88
  6. Step 6: Final answer
    x = 474,603.37

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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.