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Finding the Fourth Proportional to 699,810.67, 966,203.54 and 538,380.91

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Solution

The fourth proportional to 699,810.67, 966,203.54 and 538,380.91 is: 743,323.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,810.67 : 966,203.54 = 538,380.91 : x
  2. Step 2: Convert to fraction form
    699,810.67/966,203.54 = 538,380.91/x
  3. Step 3: Cross multiply
    699,810.67x = 966,203.54 × 538,380.91
  4. Step 4: Simplify right side
    699,810.67x = 520,185,541,110.42
  5. Step 5: Solve for x
    x = 520,185,541,110.42/699,810.67
  6. Step 6: Final answer
    x = 743,323.25

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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.