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Finding the Fourth Proportional to 615,324.65, 849,190.64 and 343,445.58

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Solution

The fourth proportional to 615,324.65, 849,190.64 and 343,445.58 is: 473,978.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,324.65 : 849,190.64 = 343,445.58 : x
  2. Step 2: Convert to fraction form
    615,324.65/849,190.64 = 343,445.58/x
  3. Step 3: Cross multiply
    615,324.65x = 849,190.64 × 343,445.58
  4. Step 4: Simplify right side
    615,324.65x = 291,650,770,168.14
  5. Step 5: Solve for x
    x = 291,650,770,168.14/615,324.65
  6. Step 6: Final answer
    x = 473,978.69

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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.