Home / 1,287,428,975.28-1,777,281,826.14-863,891,099.82

Finding the Fourth Proportional to 1,287,428,975.28, 1,777,281,826.14 and 863,891,099.82

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Solution

The fourth proportional to 1,287,428,975.28, 1,777,281,826.14 and 863,891,099.82 is: 1,192,592,353.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,428,975.28 : 1,777,281,826.14 = 863,891,099.82 : x
  2. Step 2: Convert to fraction form
    1,287,428,975.28/1,777,281,826.14 = 863,891,099.82/x
  3. Step 3: Cross multiply
    1,287,428,975.28x = 1,777,281,826.14 × 863,891,099.82
  4. Step 4: Simplify right side
    1,287,428,975.28x = 1,535,377,951,474,182,912
  5. Step 5: Solve for x
    x = 1,535,377,951,474,182,912/1,287,428,975.28
  6. Step 6: Final answer
    x = 1,192,592,353.41

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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.