Home / 3,128,317.20-4,688,976.60-1,781,125.20

Finding the Fourth Proportional to 3,128,317.20, 4,688,976.60 and 1,781,125.20

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Solution

The fourth proportional to 3,128,317.20, 4,688,976.60 and 1,781,125.20 is: 2,669,695.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128,317.20 : 4,688,976.60 = 1,781,125.20 : x
  2. Step 2: Convert to fraction form
    3,128,317.20/4,688,976.60 = 1,781,125.20/x
  3. Step 3: Cross multiply
    3,128,317.20x = 4,688,976.60 × 1,781,125.20
  4. Step 4: Simplify right side
    3,128,317.20x = 8,351,654,384,470.32
  5. Step 5: Solve for x
    x = 8,351,654,384,470.32/3,128,317.20
  6. Step 6: Final answer
    x = 2,669,695.51

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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.