Home / 684,754.24-1,028,128.38-486,129.28

Finding the Fourth Proportional to 684,754.24, 1,028,128.38 and 486,129.28

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Solution

The fourth proportional to 684,754.24, 1,028,128.38 and 486,129.28 is: 729,901.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,754.24 : 1,028,128.38 = 486,129.28 : x
  2. Step 2: Convert to fraction form
    684,754.24/1,028,128.38 = 486,129.28/x
  3. Step 3: Cross multiply
    684,754.24x = 1,028,128.38 × 486,129.28
  4. Step 4: Simplify right side
    684,754.24x = 499,803,309,116.97
  5. Step 5: Solve for x
    x = 499,803,309,116.97/684,754.24
  6. Step 6: Final answer
    x = 729,901.74

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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.