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Finding the Fourth Proportional to 565,385.88, 780,199.56 and 310,737.28

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Solution

The fourth proportional to 565,385.88, 780,199.56 and 310,737.28 is: 428,799.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,385.88 : 780,199.56 = 310,737.28 : x
  2. Step 2: Convert to fraction form
    565,385.88/780,199.56 = 310,737.28/x
  3. Step 3: Cross multiply
    565,385.88x = 780,199.56 × 310,737.28
  4. Step 4: Simplify right side
    565,385.88x = 242,437,089,131.60
  5. Step 5: Solve for x
    x = 242,437,089,131.60/565,385.88
  6. Step 6: Final answer
    x = 428,799.33

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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.