Home / 825,374.80-1,139,253.42-486,039.88

Finding the Fourth Proportional to 825,374.80, 1,139,253.42 and 486,039.88

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Solution

The fourth proportional to 825,374.80, 1,139,253.42 and 486,039.88 is: 670,874.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,374.80 : 1,139,253.42 = 486,039.88 : x
  2. Step 2: Convert to fraction form
    825,374.80/1,139,253.42 = 486,039.88/x
  3. Step 3: Cross multiply
    825,374.80x = 1,139,253.42 × 486,039.88
  4. Step 4: Simplify right side
    825,374.80x = 553,722,595,546.39
  5. Step 5: Solve for x
    x = 553,722,595,546.39/825,374.80
  6. Step 6: Final answer
    x = 670,874.12

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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.