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Finding the Fourth Proportional to 722,930.13, 997,626.61 and 400,633.31

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Solution

The fourth proportional to 722,930.13, 997,626.61 and 400,633.31 is: 552,864.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,930.13 : 997,626.61 = 400,633.31 : x
  2. Step 2: Convert to fraction form
    722,930.13/997,626.61 = 400,633.31/x
  3. Step 3: Cross multiply
    722,930.13x = 997,626.61 × 400,633.31
  4. Step 4: Simplify right side
    722,930.13x = 399,682,450,908.38
  5. Step 5: Solve for x
    x = 399,682,450,908.38/722,930.13
  6. Step 6: Final answer
    x = 552,864.56

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1.5x scale

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.