Home / 820,881.90-1,231,445.97-288,309.06

Finding the Fourth Proportional to 820,881.90, 1,231,445.97 and 288,309.06

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Solution

The fourth proportional to 820,881.90, 1,231,445.97 and 288,309.06 is: 432,506.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,881.90 : 1,231,445.97 = 288,309.06 : x
  2. Step 2: Convert to fraction form
    820,881.90/1,231,445.97 = 288,309.06/x
  3. Step 3: Cross multiply
    820,881.90x = 1,231,445.97 × 288,309.06
  4. Step 4: Simplify right side
    820,881.90x = 355,037,030,051.49
  5. Step 5: Solve for x
    x = 355,037,030,051.49/820,881.90
  6. Step 6: Final answer
    x = 432,506.83

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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.