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Finding the Fourth Proportional to 569,305.50, 785,433.87 and 438,522.78

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Solution

The fourth proportional to 569,305.50, 785,433.87 and 438,522.78 is: 605,001.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,305.50 : 785,433.87 = 438,522.78 : x
  2. Step 2: Convert to fraction form
    569,305.50/785,433.87 = 438,522.78/x
  3. Step 3: Cross multiply
    569,305.50x = 785,433.87 × 438,522.78
  4. Step 4: Simplify right side
    569,305.50x = 344,430,644,178.56
  5. Step 5: Solve for x
    x = 344,430,644,178.56/569,305.50
  6. Step 6: Final answer
    x = 605,001.43

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1.5x scale

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.