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Finding the Fourth Proportional to 722,968.71, 997,696.80 and 400,727.22

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Solution

The fourth proportional to 722,968.71, 997,696.80 and 400,727.22 is: 553,003.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,968.71 : 997,696.80 = 400,727.22 : x
  2. Step 2: Convert to fraction form
    722,968.71/997,696.80 = 400,727.22/x
  3. Step 3: Cross multiply
    722,968.71x = 997,696.80 × 400,727.22
  4. Step 4: Simplify right side
    722,968.71x = 399,804,265,066.90
  5. Step 5: Solve for x
    x = 399,804,265,066.90/722,968.71
  6. Step 6: Final answer
    x = 553,003.55

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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.