Home / 638,462.88-881,062.56-351,976.32

Finding the Fourth Proportional to 638,462.88, 881,062.56 and 351,976.32

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Solution

The fourth proportional to 638,462.88, 881,062.56 and 351,976.32 is: 485,718.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,462.88 : 881,062.56 = 351,976.32 : x
  2. Step 2: Convert to fraction form
    638,462.88/881,062.56 = 351,976.32/x
  3. Step 3: Cross multiply
    638,462.88x = 881,062.56 × 351,976.32
  4. Step 4: Simplify right side
    638,462.88x = 310,113,157,558.58
  5. Step 5: Solve for x
    x = 310,113,157,558.58/638,462.88
  6. Step 6: Final answer
    x = 485,718.38

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Double scale
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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.