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Finding the Fourth Proportional to 615,695.12, 849,650.96 and 343,767.20

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Solution

The fourth proportional to 615,695.12, 849,650.96 and 343,767.20 is: 474,394.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,695.12 : 849,650.96 = 343,767.20 : x
  2. Step 2: Convert to fraction form
    615,695.12/849,650.96 = 343,767.20/x
  3. Step 3: Cross multiply
    615,695.12x = 849,650.96 × 343,767.20
  4. Step 4: Simplify right side
    615,695.12x = 292,082,131,496.51
  5. Step 5: Solve for x
    x = 292,082,131,496.51/615,695.12
  6. Step 6: Final answer
    x = 474,394.10

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1.5x scale

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.