Home / 1,427,143.20-1,969,476.48-782,561.76

Finding the Fourth Proportional to 1,427,143.20, 1,969,476.48 and 782,561.76

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Solution

The fourth proportional to 1,427,143.20, 1,969,476.48 and 782,561.76 is: 1,079,945.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,143.20 : 1,969,476.48 = 782,561.76 : x
  2. Step 2: Convert to fraction form
    1,427,143.20/1,969,476.48 = 782,561.76/x
  3. Step 3: Cross multiply
    1,427,143.20x = 1,969,476.48 × 782,561.76
  4. Step 4: Simplify right side
    1,427,143.20x = 1,541,236,980,467.40
  5. Step 5: Solve for x
    x = 1,541,236,980,467.40/1,427,143.20
  6. Step 6: Final answer
    x = 1,079,945.57

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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.