Home / 1,274,126.44-1,912,371.18-643,482.76

Finding the Fourth Proportional to 1,274,126.44, 1,912,371.18 and 643,482.76

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Solution

The fourth proportional to 1,274,126.44, 1,912,371.18 and 643,482.76 is: 965,820.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,126.44 : 1,912,371.18 = 643,482.76 : x
  2. Step 2: Convert to fraction form
    1,274,126.44/1,912,371.18 = 643,482.76/x
  3. Step 3: Cross multiply
    1,274,126.44x = 1,912,371.18 × 643,482.76
  4. Step 4: Simplify right side
    1,274,126.44x = 1,230,577,885,050.86
  5. Step 5: Solve for x
    x = 1,230,577,885,050.86/1,274,126.44
  6. Step 6: Final answer
    x = 965,820.85

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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.