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Finding the Fourth Proportional to 565,772.52, 780,766.32 and 311,123.70

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Solution

The fourth proportional to 565,772.52, 780,766.32 and 311,123.70 is: 429,350.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,772.52 : 780,766.32 = 311,123.70 : x
  2. Step 2: Convert to fraction form
    565,772.52/780,766.32 = 311,123.70/x
  3. Step 3: Cross multiply
    565,772.52x = 780,766.32 × 311,123.70
  4. Step 4: Simplify right side
    565,772.52x = 242,914,906,313.78
  5. Step 5: Solve for x
    x = 242,914,906,313.78/565,772.52
  6. Step 6: Final answer
    x = 429,350.84

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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.