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Finding the Fourth Proportional to 572,259.72, 789,755.32 and 317,610.91

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Solution

The fourth proportional to 572,259.72, 789,755.32 and 317,610.91 is: 438,323.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,259.72 : 789,755.32 = 317,610.91 : x
  2. Step 2: Convert to fraction form
    572,259.72/789,755.32 = 317,610.91/x
  3. Step 3: Cross multiply
    572,259.72x = 789,755.32 × 317,610.91
  4. Step 4: Simplify right side
    572,259.72x = 250,834,905,862.54
  5. Step 5: Solve for x
    x = 250,834,905,862.54/572,259.72
  6. Step 6: Final answer
    x = 438,323.54

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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.