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Finding the Fourth Proportional to 560,726.65, 773,775.75 and 318,986.47

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Solution

The fourth proportional to 560,726.65, 773,775.75 and 318,986.47 is: 440,185.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,726.65 : 773,775.75 = 318,986.47 : x
  2. Step 2: Convert to fraction form
    560,726.65/773,775.75 = 318,986.47/x
  3. Step 3: Cross multiply
    560,726.65x = 773,775.75 × 318,986.47
  4. Step 4: Simplify right side
    560,726.65x = 246,823,995,064.10
  5. Step 5: Solve for x
    x = 246,823,995,064.10/560,726.65
  6. Step 6: Final answer
    x = 440,185.95

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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.