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Finding the Fourth Proportional to 566,999.60, 782,503.56 and 312,396.56

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Solution

The fourth proportional to 566,999.60, 782,503.56 and 312,396.56 is: 431,131.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,999.60 : 782,503.56 = 312,396.56 : x
  2. Step 2: Convert to fraction form
    566,999.60/782,503.56 = 312,396.56/x
  3. Step 3: Cross multiply
    566,999.60x = 782,503.56 × 312,396.56
  4. Step 4: Simplify right side
    566,999.60x = 244,451,420,331.75
  5. Step 5: Solve for x
    x = 244,451,420,331.75/566,999.60
  6. Step 6: Final answer
    x = 431,131.56

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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.