Home / 820,919.36-1,231,563.72-288,477.20

Finding the Fourth Proportional to 820,919.36, 1,231,563.72 and 288,477.20

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Solution

The fourth proportional to 820,919.36, 1,231,563.72 and 288,477.20 is: 432,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,919.36 : 1,231,563.72 = 288,477.20 : x
  2. Step 2: Convert to fraction form
    820,919.36/1,231,563.72 = 288,477.20/x
  3. Step 3: Cross multiply
    820,919.36x = 1,231,563.72 × 288,477.20
  4. Step 4: Simplify right side
    820,919.36x = 355,278,053,567.18
  5. Step 5: Solve for x
    x = 355,278,053,567.18/820,919.36
  6. Step 6: Final answer
    x = 432,780.70

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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.