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Finding the Fourth Proportional to 722,680.39, 997,255.55 and 400,367.17

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Solution

The fourth proportional to 722,680.39, 997,255.55 and 400,367.17 is: 552,482.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,680.39 : 997,255.55 = 400,367.17 : x
  2. Step 2: Convert to fraction form
    722,680.39/997,255.55 = 400,367.17/x
  3. Step 3: Cross multiply
    722,680.39x = 997,255.55 × 400,367.17
  4. Step 4: Simplify right side
    722,680.39x = 399,268,384,567.78
  5. Step 5: Solve for x
    x = 399,268,384,567.78/722,680.39
  6. Step 6: Final answer
    x = 552,482.66

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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.