Home / 818,618.97-1,225,661.25-418,397.97

Finding the Fourth Proportional to 818,618.97, 1,225,661.25 and 418,397.97

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Solution

The fourth proportional to 818,618.97, 1,225,661.25 and 418,397.97 is: 626,438.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,618.97 : 1,225,661.25 = 418,397.97 : x
  2. Step 2: Convert to fraction form
    818,618.97/1,225,661.25 = 418,397.97/x
  3. Step 3: Cross multiply
    818,618.97x = 1,225,661.25 × 418,397.97
  4. Step 4: Simplify right side
    818,618.97x = 512,814,178,907.66
  5. Step 5: Solve for x
    x = 512,814,178,907.66/818,618.97
  6. Step 6: Final answer
    x = 626,438.18

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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.