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Finding the Fourth Proportional to 565,672.84, 780,631.41 and 311,040.40

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Solution

The fourth proportional to 565,672.84, 780,631.41 and 311,040.40 is: 429,237.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,672.84 : 780,631.41 = 311,040.40 : x
  2. Step 2: Convert to fraction form
    565,672.84/780,631.41 = 311,040.40/x
  3. Step 3: Cross multiply
    565,672.84x = 780,631.41 × 311,040.40
  4. Step 4: Simplify right side
    565,672.84x = 242,807,906,018.96
  5. Step 5: Solve for x
    x = 242,807,906,018.96/565,672.84
  6. Step 6: Final answer
    x = 429,237.34

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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.