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Finding the Fourth Proportional to 723,608.64, 998,627.94 and 401,332.32

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Solution

The fourth proportional to 723,608.64, 998,627.94 and 401,332.32 is: 553,865.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,608.64 : 998,627.94 = 401,332.32 : x
  2. Step 2: Convert to fraction form
    723,608.64/998,627.94 = 401,332.32/x
  3. Step 3: Cross multiply
    723,608.64x = 998,627.94 × 401,332.32
  4. Step 4: Simplify right side
    723,608.64x = 400,781,667,977.02
  5. Step 5: Solve for x
    x = 400,781,667,977.02/723,608.64
  6. Step 6: Final answer
    x = 553,865.23

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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.