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Finding the Fourth Proportional to 563,289.48, 777,370.59 and 321,649.65

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Solution

The fourth proportional to 563,289.48, 777,370.59 and 321,649.65 is: 443,894.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,289.48 : 777,370.59 = 321,649.65 : x
  2. Step 2: Convert to fraction form
    563,289.48/777,370.59 = 321,649.65/x
  3. Step 3: Cross multiply
    563,289.48x = 777,370.59 × 321,649.65
  4. Step 4: Simplify right side
    563,289.48x = 250,040,978,193.79
  5. Step 5: Solve for x
    x = 250,040,978,193.79/563,289.48
  6. Step 6: Final answer
    x = 443,894.28

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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.