Home / 855,165.80-1,281,711.90-381,348.20

Finding the Fourth Proportional to 855,165.80, 1,281,711.90 and 381,348.20

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Solution

The fourth proportional to 855,165.80, 1,281,711.90 and 381,348.20 is: 571,559.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,165.80 : 1,281,711.90 = 381,348.20 : x
  2. Step 2: Convert to fraction form
    855,165.80/1,281,711.90 = 381,348.20/x
  3. Step 3: Cross multiply
    855,165.80x = 1,281,711.90 × 381,348.20
  4. Step 4: Simplify right side
    855,165.80x = 488,778,525,983.58
  5. Step 5: Solve for x
    x = 488,778,525,983.58/855,165.80
  6. Step 6: Final answer
    x = 571,559.95

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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.