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Finding the Fourth Proportional to 722,896.65, 997,603.25 and 400,612.05

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Solution

The fourth proportional to 722,896.65, 997,603.25 and 400,612.05 is: 552,847.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,896.65 : 997,603.25 = 400,612.05 : x
  2. Step 2: Convert to fraction form
    722,896.65/997,603.25 = 400,612.05/x
  3. Step 3: Cross multiply
    722,896.65x = 997,603.25 × 400,612.05
  4. Step 4: Simplify right side
    722,896.65x = 399,651,881,066.10
  5. Step 5: Solve for x
    x = 399,651,881,066.10/722,896.65
  6. Step 6: Final answer
    x = 552,847.88

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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.