Home / 825,407.12-1,139,065.80-538,757.84

Finding the Fourth Proportional to 825,407.12, 1,139,065.80 and 538,757.84

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Solution

The fourth proportional to 825,407.12, 1,139,065.80 and 538,757.84 is: 743,488.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,407.12 : 1,139,065.80 = 538,757.84 : x
  2. Step 2: Convert to fraction form
    825,407.12/1,139,065.80 = 538,757.84/x
  3. Step 3: Cross multiply
    825,407.12x = 1,139,065.80 × 538,757.84
  4. Step 4: Simplify right side
    825,407.12x = 613,680,630,025.87
  5. Step 5: Solve for x
    x = 613,680,630,025.87/825,407.12
  6. Step 6: Final answer
    x = 743,488.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.