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Finding the Fourth Proportional to 571,699.24, 789,198.18 and 400,291

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Solution

The fourth proportional to 571,699.24, 789,198.18 and 400,291 is: 552,578.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,699.24 : 789,198.18 = 400,291 : x
  2. Step 2: Convert to fraction form
    571,699.24/789,198.18 = 400,291/x
  3. Step 3: Cross multiply
    571,699.24x = 789,198.18 × 400,291
  4. Step 4: Simplify right side
    571,699.24x = 315,908,928,670.38
  5. Step 5: Solve for x
    x = 315,908,928,670.38/571,699.24
  6. Step 6: Final answer
    x = 552,578.89

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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.