Home / 857,205.54-1,286,398.85-384,419.88

Finding the Fourth Proportional to 857,205.54, 1,286,398.85 and 384,419.88

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Solution

The fourth proportional to 857,205.54, 1,286,398.85 and 384,419.88 is: 576,894.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,205.54 : 1,286,398.85 = 384,419.88 : x
  2. Step 2: Convert to fraction form
    857,205.54/1,286,398.85 = 384,419.88/x
  3. Step 3: Cross multiply
    857,205.54x = 1,286,398.85 × 384,419.88
  4. Step 4: Simplify right side
    857,205.54x = 494,517,289,627.04
  5. Step 5: Solve for x
    x = 494,517,289,627.04/857,205.54
  6. Step 6: Final answer
    x = 576,894.65

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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.