Home / 1,326,488.05-1,990,119.66-427,909.96

Finding the Fourth Proportional to 1,326,488.05, 1,990,119.66 and 427,909.96

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Solution

The fourth proportional to 1,326,488.05, 1,990,119.66 and 427,909.96 is: 641,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,488.05 : 1,990,119.66 = 427,909.96 : x
  2. Step 2: Convert to fraction form
    1,326,488.05/1,990,119.66 = 427,909.96/x
  3. Step 3: Cross multiply
    1,326,488.05x = 1,990,119.66 × 427,909.96
  4. Step 4: Simplify right side
    1,326,488.05x = 851,592,024,105.81
  5. Step 5: Solve for x
    x = 851,592,024,105.81/1,326,488.05
  6. Step 6: Final answer
    x = 641,989.97

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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.