Home / 1,687,778.56-2,528,275.56-787,978.72

Finding the Fourth Proportional to 1,687,778.56, 2,528,275.56 and 787,978.72

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Solution

The fourth proportional to 1,687,778.56, 2,528,275.56 and 787,978.72 is: 1,180,384.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,778.56 : 2,528,275.56 = 787,978.72 : x
  2. Step 2: Convert to fraction form
    1,687,778.56/2,528,275.56 = 787,978.72/x
  3. Step 3: Cross multiply
    1,687,778.56x = 2,528,275.56 × 787,978.72
  4. Step 4: Simplify right side
    1,687,778.56x = 1,992,227,339,576.08
  5. Step 5: Solve for x
    x = 1,992,227,339,576.08/1,687,778.56
  6. Step 6: Final answer
    x = 1,180,384.32

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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.