Home / 498,629.32-688,134.22-304,976.28

Finding the Fourth Proportional to 498,629.32, 688,134.22 and 304,976.28

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Solution

The fourth proportional to 498,629.32, 688,134.22 and 304,976.28 is: 420,883.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,629.32 : 688,134.22 = 304,976.28 : x
  2. Step 2: Convert to fraction form
    498,629.32/688,134.22 = 304,976.28/x
  3. Step 3: Cross multiply
    498,629.32x = 688,134.22 × 304,976.28
  4. Step 4: Simplify right side
    498,629.32x = 209,864,612,357.02
  5. Step 5: Solve for x
    x = 209,864,612,357.02/498,629.32
  6. Step 6: Final answer
    x = 420,883.02

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1.5x scale

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.