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Finding the Fourth Proportional to 722,889.90, 997,593.84 and 400,605.35

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Solution

The fourth proportional to 722,889.90, 997,593.84 and 400,605.35 is: 552,838.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,889.90 : 997,593.84 = 400,605.35 : x
  2. Step 2: Convert to fraction form
    722,889.90/997,593.84 = 400,605.35/x
  3. Step 3: Cross multiply
    722,889.90x = 997,593.84 × 400,605.35
  4. Step 4: Simplify right side
    722,889.90x = 399,641,424,443.08
  5. Step 5: Solve for x
    x = 399,641,424,443.08/722,889.90
  6. Step 6: Final answer
    x = 552,838.58

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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.