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Finding the Fourth Proportional to 722,958.56, 997,690.16 and 400,675.76

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Solution

The fourth proportional to 722,958.56, 997,690.16 and 400,675.76 is: 552,936.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,958.56 : 997,690.16 = 400,675.76 : x
  2. Step 2: Convert to fraction form
    722,958.56/997,690.16 = 400,675.76/x
  3. Step 3: Cross multiply
    722,958.56x = 997,690.16 × 400,675.76
  4. Step 4: Simplify right side
    722,958.56x = 399,750,263,102.52
  5. Step 5: Solve for x
    x = 399,750,263,102.52/722,958.56
  6. Step 6: Final answer
    x = 552,936.62

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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.