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Finding the Fourth Proportional to 565,738.20, 780,606.90 and 317,388.42

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Solution

The fourth proportional to 565,738.20, 780,606.90 and 317,388.42 is: 437,933.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,738.20 : 780,606.90 = 317,388.42 : x
  2. Step 2: Convert to fraction form
    565,738.20/780,606.90 = 317,388.42/x
  3. Step 3: Cross multiply
    565,738.20x = 780,606.90 × 317,388.42
  4. Step 4: Simplify right side
    565,738.20x = 247,755,590,632.10
  5. Step 5: Solve for x
    x = 247,755,590,632.10/565,738.20
  6. Step 6: Final answer
    x = 437,933.29

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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.