Home / 778,577.20-1,167,865.80-512,856.70

Finding the Fourth Proportional to 778,577.20, 1,167,865.80 and 512,856.70

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Solution

The fourth proportional to 778,577.20, 1,167,865.80 and 512,856.70 is: 769,285.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,577.20 : 1,167,865.80 = 512,856.70 : x
  2. Step 2: Convert to fraction form
    778,577.20/1,167,865.80 = 512,856.70/x
  3. Step 3: Cross multiply
    778,577.20x = 1,167,865.80 × 512,856.70
  4. Step 4: Simplify right side
    778,577.20x = 598,947,800,230.86
  5. Step 5: Solve for x
    x = 598,947,800,230.86/778,577.20
  6. Step 6: Final answer
    x = 769,285.05

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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.