Home / 492,479.12-679,354.92-329,417.36

Finding the Fourth Proportional to 492,479.12, 679,354.92 and 329,417.36

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Solution

The fourth proportional to 492,479.12, 679,354.92 and 329,417.36 is: 454,417.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,479.12 : 679,354.92 = 329,417.36 : x
  2. Step 2: Convert to fraction form
    492,479.12/679,354.92 = 329,417.36/x
  3. Step 3: Cross multiply
    492,479.12x = 679,354.92 × 329,417.36
  4. Step 4: Simplify right side
    492,479.12x = 223,791,304,249.41
  5. Step 5: Solve for x
    x = 223,791,304,249.41/492,479.12
  6. Step 6: Final answer
    x = 454,417.85

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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.