Home / 782,358.60-1,078,594.74-668,856.41

Finding the Fourth Proportional to 782,358.60, 1,078,594.74 and 668,856.41

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Solution

The fourth proportional to 782,358.60, 1,078,594.74 and 668,856.41 is: 922,115.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,358.60 : 1,078,594.74 = 668,856.41 : x
  2. Step 2: Convert to fraction form
    782,358.60/1,078,594.74 = 668,856.41/x
  3. Step 3: Cross multiply
    782,358.60x = 1,078,594.74 × 668,856.41
  4. Step 4: Simplify right side
    782,358.60x = 721,425,000,248.31
  5. Step 5: Solve for x
    x = 721,425,000,248.31/782,358.60
  6. Step 6: Final answer
    x = 922,115.51

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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.