Home / 1,225,998-1,691,885.70-682,156.72

Finding the Fourth Proportional to 1,225,998, 1,691,885.70 and 682,156.72

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Solution

The fourth proportional to 1,225,998, 1,691,885.70 and 682,156.72 is: 941,380.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,998 : 1,691,885.70 = 682,156.72 : x
  2. Step 2: Convert to fraction form
    1,225,998/1,691,885.70 = 682,156.72/x
  3. Step 3: Cross multiply
    1,225,998x = 1,691,885.70 × 682,156.72
  4. Step 4: Simplify right side
    1,225,998x = 1,154,131,199,726.90
  5. Step 5: Solve for x
    x = 1,154,131,199,726.90/1,225,998
  6. Step 6: Final answer
    x = 941,380.98

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.