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Finding the Fourth Proportional to 722,588.80, 997,233.80 and 400,399.96

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Solution

The fourth proportional to 722,588.80, 997,233.80 and 400,399.96 is: 552,585.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,588.80 : 997,233.80 = 400,399.96 : x
  2. Step 2: Convert to fraction form
    722,588.80/997,233.80 = 400,399.96/x
  3. Step 3: Cross multiply
    722,588.80x = 997,233.80 × 400,399.96
  4. Step 4: Simplify right side
    722,588.80x = 399,292,373,630.65
  5. Step 5: Solve for x
    x = 399,292,373,630.65/722,588.80
  6. Step 6: Final answer
    x = 552,585.89

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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.