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Finding the Fourth Proportional to 615,398.42, 849,292.50 and 343,519.28

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Solution

The fourth proportional to 615,398.42, 849,292.50 and 343,519.28 is: 474,080.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,398.42 : 849,292.50 = 343,519.28 : x
  2. Step 2: Convert to fraction form
    615,398.42/849,292.50 = 343,519.28/x
  3. Step 3: Cross multiply
    615,398.42x = 849,292.50 × 343,519.28
  4. Step 4: Simplify right side
    615,398.42x = 291,748,351,520.83
  5. Step 5: Solve for x
    x = 291,748,351,520.83/615,398.42
  6. Step 6: Final answer
    x = 474,080.44

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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.