Home / 781,461.20-1,172,139.96-354,895.76

Finding the Fourth Proportional to 781,461.20, 1,172,139.96 and 354,895.76

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Solution

The fourth proportional to 781,461.20, 1,172,139.96 and 354,895.76 is: 532,320.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,461.20 : 1,172,139.96 = 354,895.76 : x
  2. Step 2: Convert to fraction form
    781,461.20/1,172,139.96 = 354,895.76/x
  3. Step 3: Cross multiply
    781,461.20x = 1,172,139.96 × 354,895.76
  4. Step 4: Simplify right side
    781,461.20x = 415,987,501,930.57
  5. Step 5: Solve for x
    x = 415,987,501,930.57/781,461.20
  6. Step 6: Final answer
    x = 532,320.10

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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.