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Finding the Fourth Proportional to 560,715.40, 773,760.22 and 318,975.22

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Solution

The fourth proportional to 560,715.40, 773,760.22 and 318,975.22 is: 440,170.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,715.40 : 773,760.22 = 318,975.22 : x
  2. Step 2: Convert to fraction form
    560,715.40/773,760.22 = 318,975.22/x
  3. Step 3: Cross multiply
    560,715.40x = 773,760.22 × 318,975.22
  4. Step 4: Simplify right side
    560,715.40x = 246,810,336,401.75
  5. Step 5: Solve for x
    x = 246,810,336,401.75/560,715.40
  6. Step 6: Final answer
    x = 440,170.43

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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.