Home / 1,221,438.80-1,832,158.20-918,320.60

Finding the Fourth Proportional to 1,221,438.80, 1,832,158.20 and 918,320.60

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Solution

The fourth proportional to 1,221,438.80, 1,832,158.20 and 918,320.60 is: 1,377,480.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,438.80 : 1,832,158.20 = 918,320.60 : x
  2. Step 2: Convert to fraction form
    1,221,438.80/1,832,158.20 = 918,320.60/x
  3. Step 3: Cross multiply
    1,221,438.80x = 1,832,158.20 × 918,320.60
  4. Step 4: Simplify right side
    1,221,438.80x = 1,682,508,617,518.92
  5. Step 5: Solve for x
    x = 1,682,508,617,518.92/1,221,438.80
  6. Step 6: Final answer
    x = 1,377,480.90

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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.