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Finding the Fourth Proportional to 722,969.38, 997,697.84 and 400,700.28

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Solution

The fourth proportional to 722,969.38, 997,697.84 and 400,700.28 is: 552,966.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,969.38 : 997,697.84 = 400,700.28 : x
  2. Step 2: Convert to fraction form
    722,969.38/997,697.84 = 400,700.28/x
  3. Step 3: Cross multiply
    722,969.38x = 997,697.84 × 400,700.28
  4. Step 4: Simplify right side
    722,969.38x = 399,777,807,835.20
  5. Step 5: Solve for x
    x = 399,777,807,835.20/722,969.38
  6. Step 6: Final answer
    x = 552,966.44

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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.