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Finding the Fourth Proportional to 722,898.78, 997,606.18 and 400,614.18

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Solution

The fourth proportional to 722,898.78, 997,606.18 and 400,614.18 is: 552,850.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,898.78 : 997,606.18 = 400,614.18 : x
  2. Step 2: Convert to fraction form
    722,898.78/997,606.18 = 400,614.18/x
  3. Step 3: Cross multiply
    722,898.78x = 997,606.18 × 400,614.18
  4. Step 4: Simplify right side
    722,898.78x = 399,655,181,763.63
  5. Step 5: Solve for x
    x = 399,655,181,763.63/722,898.78
  6. Step 6: Final answer
    x = 552,850.82

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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.