Home / 820,922.40-1,231,506.72-288,349.56

Finding the Fourth Proportional to 820,922.40, 1,231,506.72 and 288,349.56

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Solution

The fourth proportional to 820,922.40, 1,231,506.72 and 288,349.56 is: 432,567.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,922.40 : 1,231,506.72 = 288,349.56 : x
  2. Step 2: Convert to fraction form
    820,922.40/1,231,506.72 = 288,349.56/x
  3. Step 3: Cross multiply
    820,922.40x = 1,231,506.72 × 288,349.56
  4. Step 4: Simplify right side
    820,922.40x = 355,104,420,849.04
  5. Step 5: Solve for x
    x = 355,104,420,849.04/820,922.40
  6. Step 6: Final answer
    x = 432,567.59

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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.