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Finding the Fourth Proportional to 572,077.50, 789,466.95 and 317,469.66

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Solution

The fourth proportional to 572,077.50, 789,466.95 and 317,469.66 is: 438,108.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,077.50 : 789,466.95 = 317,469.66 : x
  2. Step 2: Convert to fraction form
    572,077.50/789,466.95 = 317,469.66/x
  3. Step 3: Cross multiply
    572,077.50x = 789,466.95 × 317,469.66
  4. Step 4: Simplify right side
    572,077.50x = 250,631,804,197.74
  5. Step 5: Solve for x
    x = 250,631,804,197.74/572,077.50
  6. Step 6: Final answer
    x = 438,108.13

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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.