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Finding the Fourth Proportional to 565,799.53, 780,787.78 and 311,150.72

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Solution

The fourth proportional to 565,799.53, 780,787.78 and 311,150.72 is: 429,379.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,799.53 : 780,787.78 = 311,150.72 : x
  2. Step 2: Convert to fraction form
    565,799.53/780,787.78 = 311,150.72/x
  3. Step 3: Cross multiply
    565,799.53x = 780,787.78 × 311,150.72
  4. Step 4: Simplify right side
    565,799.53x = 242,942,677,571.47
  5. Step 5: Solve for x
    x = 242,942,677,571.47/565,799.53
  6. Step 6: Final answer
    x = 429,379.43

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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.