Home / 1,989,753.65-2,745,080.52-1,224,478.61

Finding the Fourth Proportional to 1,989,753.65, 2,745,080.52 and 1,224,478.61

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Solution

The fourth proportional to 1,989,753.65, 2,745,080.52 and 1,224,478.61 is: 1,689,300.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,753.65 : 2,745,080.52 = 1,224,478.61 : x
  2. Step 2: Convert to fraction form
    1,989,753.65/2,745,080.52 = 1,224,478.61/x
  3. Step 3: Cross multiply
    1,989,753.65x = 2,745,080.52 × 1,224,478.61
  4. Step 4: Simplify right side
    1,989,753.65x = 3,361,292,365,742.27
  5. Step 5: Solve for x
    x = 3,361,292,365,742.27/1,989,753.65
  6. Step 6: Final answer
    x = 1,689,300.77

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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.