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Finding the Fourth Proportional to 722,672.64, 997,207.62 and 400,302.84

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Solution

The fourth proportional to 722,672.64, 997,207.62 and 400,302.84 is: 552,373.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,672.64 : 997,207.62 = 400,302.84 : x
  2. Step 2: Convert to fraction form
    722,672.64/997,207.62 = 400,302.84/x
  3. Step 3: Cross multiply
    722,672.64x = 997,207.62 × 400,302.84
  4. Step 4: Simplify right side
    722,672.64x = 399,185,042,355.64
  5. Step 5: Solve for x
    x = 399,185,042,355.64/722,672.64
  6. Step 6: Final answer
    x = 552,373.26

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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.