Home / 867,139.20-1,300,708.80-493,891.20

Finding the Fourth Proportional to 867,139.20, 1,300,708.80 and 493,891.20

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Solution

The fourth proportional to 867,139.20, 1,300,708.80 and 493,891.20 is: 740,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,139.20 : 1,300,708.80 = 493,891.20 : x
  2. Step 2: Convert to fraction form
    867,139.20/1,300,708.80 = 493,891.20/x
  3. Step 3: Cross multiply
    867,139.20x = 1,300,708.80 × 493,891.20
  4. Step 4: Simplify right side
    867,139.20x = 642,408,630,082.56
  5. Step 5: Solve for x
    x = 642,408,630,082.56/867,139.20
  6. Step 6: Final answer
    x = 740,836.80

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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.