Home / 1,210,375.76-1,668,757.68-991,771.74

Finding the Fourth Proportional to 1,210,375.76, 1,668,757.68 and 991,771.74

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Solution

The fourth proportional to 1,210,375.76, 1,668,757.68 and 991,771.74 is: 1,367,366.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,375.76 : 1,668,757.68 = 991,771.74 : x
  2. Step 2: Convert to fraction form
    1,210,375.76/1,668,757.68 = 991,771.74/x
  3. Step 3: Cross multiply
    1,210,375.76x = 1,668,757.68 × 991,771.74
  4. Step 4: Simplify right side
    1,210,375.76x = 1,655,026,707,931.96
  5. Step 5: Solve for x
    x = 1,655,026,707,931.96/1,210,375.76
  6. Step 6: Final answer
    x = 1,367,366.04

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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.