Home / 1,217,221.70-1,825,832.55-318,661.70

Finding the Fourth Proportional to 1,217,221.70, 1,825,832.55 and 318,661.70

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Solution

The fourth proportional to 1,217,221.70, 1,825,832.55 and 318,661.70 is: 477,992.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,221.70 : 1,825,832.55 = 318,661.70 : x
  2. Step 2: Convert to fraction form
    1,217,221.70/1,825,832.55 = 318,661.70/x
  3. Step 3: Cross multiply
    1,217,221.70x = 1,825,832.55 × 318,661.70
  4. Step 4: Simplify right side
    1,217,221.70x = 581,822,904,298.34
  5. Step 5: Solve for x
    x = 581,822,904,298.34/1,217,221.70
  6. Step 6: Final answer
    x = 477,992.55

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Double scale
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1.5x scale

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.