Home / 678,422.39-1,017,655.19-341,278.79

Finding the Fourth Proportional to 678,422.39, 1,017,655.19 and 341,278.79

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Solution

The fourth proportional to 678,422.39, 1,017,655.19 and 341,278.79 is: 511,929.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,422.39 : 1,017,655.19 = 341,278.79 : x
  2. Step 2: Convert to fraction form
    678,422.39/1,017,655.19 = 341,278.79/x
  3. Step 3: Cross multiply
    678,422.39x = 1,017,655.19 × 341,278.79
  4. Step 4: Simplify right side
    678,422.39x = 347,304,131,880.42
  5. Step 5: Solve for x
    x = 347,304,131,880.42/678,422.39
  6. Step 6: Final answer
    x = 511,929.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.