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Finding the Fourth Proportional to 722,715.17, 997,305.26 and 400,406.04

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Solution

The fourth proportional to 722,715.17, 997,305.26 and 400,406.04 is: 552,537.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,715.17 : 997,305.26 = 400,406.04 : x
  2. Step 2: Convert to fraction form
    722,715.17/997,305.26 = 400,406.04/x
  3. Step 3: Cross multiply
    722,715.17x = 997,305.26 × 400,406.04
  4. Step 4: Simplify right side
    722,715.17x = 399,327,047,825.74
  5. Step 5: Solve for x
    x = 399,327,047,825.74/722,715.17
  6. Step 6: Final answer
    x = 552,537.25

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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.