Home / 743,356.20-1,025,832.78-403,824.72

Finding the Fourth Proportional to 743,356.20, 1,025,832.78 and 403,824.72

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Solution

The fourth proportional to 743,356.20, 1,025,832.78 and 403,824.72 is: 557,278.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,356.20 : 1,025,832.78 = 403,824.72 : x
  2. Step 2: Convert to fraction form
    743,356.20/1,025,832.78 = 403,824.72/x
  3. Step 3: Cross multiply
    743,356.20x = 1,025,832.78 × 403,824.72
  4. Step 4: Simplify right side
    743,356.20x = 414,256,635,150.32
  5. Step 5: Solve for x
    x = 414,256,635,150.32/743,356.20
  6. Step 6: Final answer
    x = 557,278.78

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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.