Home / 1,326,624.83-1,990,327.67-428,049.71

Finding the Fourth Proportional to 1,326,624.83, 1,990,327.67 and 428,049.71

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Solution

The fourth proportional to 1,326,624.83, 1,990,327.67 and 428,049.71 is: 642,200.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,624.83 : 1,990,327.67 = 428,049.71 : x
  2. Step 2: Convert to fraction form
    1,326,624.83/1,990,327.67 = 428,049.71/x
  3. Step 3: Cross multiply
    1,326,624.83x = 1,990,327.67 × 428,049.71
  4. Step 4: Simplify right side
    1,326,624.83x = 851,959,169,856.59
  5. Step 5: Solve for x
    x = 851,959,169,856.59/1,326,624.83
  6. Step 6: Final answer
    x = 642,200.53

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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.