Home / 1,287,523.20-1,929,632.40-718,903.20

Finding the Fourth Proportional to 1,287,523.20, 1,929,632.40 and 718,903.20

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Solution

The fourth proportional to 1,287,523.20, 1,929,632.40 and 718,903.20 is: 1,077,432.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,523.20 : 1,929,632.40 = 718,903.20 : x
  2. Step 2: Convert to fraction form
    1,287,523.20/1,929,632.40 = 718,903.20/x
  3. Step 3: Cross multiply
    1,287,523.20x = 1,929,632.40 × 718,903.20
  4. Step 4: Simplify right side
    1,287,523.20x = 1,387,218,907,183.68
  5. Step 5: Solve for x
    x = 1,387,218,907,183.68/1,287,523.20
  6. Step 6: Final answer
    x = 1,077,432.16

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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.