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Finding the Fourth Proportional to 615,321.65, 849,186.50 and 343,442.58

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Solution

The fourth proportional to 615,321.65, 849,186.50 and 343,442.58 is: 473,974.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,321.65 : 849,186.50 = 343,442.58 : x
  2. Step 2: Convert to fraction form
    615,321.65/849,186.50 = 343,442.58/x
  3. Step 3: Cross multiply
    615,321.65x = 849,186.50 × 343,442.58
  4. Step 4: Simplify right side
    615,321.65x = 291,646,800,743.96
  5. Step 5: Solve for x
    x = 291,646,800,743.96/615,321.65
  6. Step 6: Final answer
    x = 473,974.55

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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.