Home / 393,972.29-547,352.18-389,248.37

Finding the Fourth Proportional to 393,972.29, 547,352.18 and 389,248.37

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Solution

The fourth proportional to 393,972.29, 547,352.18 and 389,248.37 is: 540,789.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,972.29 : 547,352.18 = 389,248.37 : x
  2. Step 2: Convert to fraction form
    393,972.29/547,352.18 = 389,248.37/x
  3. Step 3: Cross multiply
    393,972.29x = 547,352.18 × 389,248.37
  4. Step 4: Simplify right side
    393,972.29x = 213,055,943,880.95
  5. Step 5: Solve for x
    x = 213,055,943,880.95/393,972.29
  6. Step 6: Final answer
    x = 540,789.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.