Home / 825,405.12-1,139,063.04-538,755.84

Finding the Fourth Proportional to 825,405.12, 1,139,063.04 and 538,755.84

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Solution

The fourth proportional to 825,405.12, 1,139,063.04 and 538,755.84 is: 743,485.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,405.12 : 1,139,063.04 = 538,755.84 : x
  2. Step 2: Convert to fraction form
    825,405.12/1,139,063.04 = 538,755.84/x
  3. Step 3: Cross multiply
    825,405.12x = 1,139,063.04 × 538,755.84
  4. Step 4: Simplify right side
    825,405.12x = 613,676,864,928.15
  5. Step 5: Solve for x
    x = 613,676,864,928.15/825,405.12
  6. Step 6: Final answer
    x = 743,485.65

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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.