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Finding the Fourth Proportional to 571,717.80, 789,019.02 and 317,151

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Solution

The fourth proportional to 571,717.80, 789,019.02 and 317,151 is: 437,695.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,717.80 : 789,019.02 = 317,151 : x
  2. Step 2: Convert to fraction form
    571,717.80/789,019.02 = 317,151/x
  3. Step 3: Cross multiply
    571,717.80x = 789,019.02 × 317,151
  4. Step 4: Simplify right side
    571,717.80x = 250,238,171,212.02
  5. Step 5: Solve for x
    x = 250,238,171,212.02/571,717.80
  6. Step 6: Final answer
    x = 437,695.26

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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.