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Finding the Fourth Proportional to 722,645.24, 997,169.60 and 400,275.32

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Solution

The fourth proportional to 722,645.24, 997,169.60 and 400,275.32 is: 552,335.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,645.24 : 997,169.60 = 400,275.32 : x
  2. Step 2: Convert to fraction form
    722,645.24/997,169.60 = 400,275.32/x
  3. Step 3: Cross multiply
    722,645.24x = 997,169.60 × 400,275.32
  4. Step 4: Simplify right side
    722,645.24x = 399,142,380,734.27
  5. Step 5: Solve for x
    x = 399,142,380,734.27/722,645.24
  6. Step 6: Final answer
    x = 552,335.17

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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.