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Finding the Fourth Proportional to 615,744.20, 849,718.80 and 343,816.64

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Solution

The fourth proportional to 615,744.20, 849,718.80 and 343,816.64 is: 474,462.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,744.20 : 849,718.80 = 343,816.64 : x
  2. Step 2: Convert to fraction form
    615,744.20/849,718.80 = 343,816.64/x
  3. Step 3: Cross multiply
    615,744.20x = 849,718.80 × 343,816.64
  4. Step 4: Simplify right side
    615,744.20x = 292,147,462,760.83
  5. Step 5: Solve for x
    x = 292,147,462,760.83/615,744.20
  6. Step 6: Final answer
    x = 474,462.39

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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.