Home / 638,322.24-880,844.64-351,826.56

Finding the Fourth Proportional to 638,322.24, 880,844.64 and 351,826.56

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Solution

The fourth proportional to 638,322.24, 880,844.64 and 351,826.56 is: 485,498.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,322.24 : 880,844.64 = 351,826.56 : x
  2. Step 2: Convert to fraction form
    638,322.24/880,844.64 = 351,826.56/x
  3. Step 3: Cross multiply
    638,322.24x = 880,844.64 × 351,826.56
  4. Step 4: Simplify right side
    638,322.24x = 309,904,539,585.64
  5. Step 5: Solve for x
    x = 309,904,539,585.64/638,322.24
  6. Step 6: Final answer
    x = 485,498.58

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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.