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Finding the Fourth Proportional to 560,716.65, 773,761.95 and 318,976.47

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Solution

The fourth proportional to 560,716.65, 773,761.95 and 318,976.47 is: 440,172.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,716.65 : 773,761.95 = 318,976.47 : x
  2. Step 2: Convert to fraction form
    560,716.65/773,761.95 = 318,976.47/x
  3. Step 3: Cross multiply
    560,716.65x = 773,761.95 × 318,976.47
  4. Step 4: Simplify right side
    560,716.65x = 246,811,855,431.32
  5. Step 5: Solve for x
    x = 246,811,855,431.32/560,716.65
  6. Step 6: Final answer
    x = 440,172.15

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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.