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Finding the Fourth Proportional to 560,722.28, 773,786.88 and 318,999.70

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Solution

The fourth proportional to 560,722.28, 773,786.88 and 318,999.70 is: 440,213.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,722.28 : 773,786.88 = 318,999.70 : x
  2. Step 2: Convert to fraction form
    560,722.28/773,786.88 = 318,999.70/x
  3. Step 3: Cross multiply
    560,722.28x = 773,786.88 × 318,999.70
  4. Step 4: Simplify right side
    560,722.28x = 246,837,780,988.94
  5. Step 5: Solve for x
    x = 246,837,780,988.94/560,722.28
  6. Step 6: Final answer
    x = 440,213.97

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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.