Home / 857,839.20-1,287,070.80-296,930.40

Finding the Fourth Proportional to 857,839.20, 1,287,070.80 and 296,930.40

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Solution

The fourth proportional to 857,839.20, 1,287,070.80 and 296,930.40 is: 445,503.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,839.20 : 1,287,070.80 = 296,930.40 : x
  2. Step 2: Convert to fraction form
    857,839.20/1,287,070.80 = 296,930.40/x
  3. Step 3: Cross multiply
    857,839.20x = 1,287,070.80 × 296,930.40
  4. Step 4: Simplify right side
    857,839.20x = 382,170,447,472.32
  5. Step 5: Solve for x
    x = 382,170,447,472.32/857,839.20
  6. Step 6: Final answer
    x = 445,503.59

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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.