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Finding the Fourth Proportional to 723,402.30, 998,203.42 and 396,629.32

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Solution

The fourth proportional to 723,402.30, 998,203.42 and 396,629.32 is: 547,298.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,402.30 : 998,203.42 = 396,629.32 : x
  2. Step 2: Convert to fraction form
    723,402.30/998,203.42 = 396,629.32/x
  3. Step 3: Cross multiply
    723,402.30x = 998,203.42 × 396,629.32
  4. Step 4: Simplify right side
    723,402.30x = 395,916,743,696.27
  5. Step 5: Solve for x
    x = 395,916,743,696.27/723,402.30
  6. Step 6: Final answer
    x = 547,298.15

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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.