Home / 1,326,460.80-1,990,078.65-427,882.59

Finding the Fourth Proportional to 1,326,460.80, 1,990,078.65 and 427,882.59

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Solution

The fourth proportional to 1,326,460.80, 1,990,078.65 and 427,882.59 is: 641,948.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,460.80 : 1,990,078.65 = 427,882.59 : x
  2. Step 2: Convert to fraction form
    1,326,460.80/1,990,078.65 = 427,882.59/x
  3. Step 3: Cross multiply
    1,326,460.80x = 1,990,078.65 × 427,882.59
  4. Step 4: Simplify right side
    1,326,460.80x = 851,520,007,065.70
  5. Step 5: Solve for x
    x = 851,520,007,065.70/1,326,460.80
  6. Step 6: Final answer
    x = 641,948.87

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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.