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Finding the Fourth Proportional to 563,392.82, 777,751.34 and 321,628.61

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Solution

The fourth proportional to 563,392.82, 777,751.34 and 321,628.61 is: 444,001.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,392.82 : 777,751.34 = 321,628.61 : x
  2. Step 2: Convert to fraction form
    563,392.82/777,751.34 = 321,628.61/x
  3. Step 3: Cross multiply
    563,392.82x = 777,751.34 × 321,628.61
  4. Step 4: Simplify right side
    563,392.82x = 250,147,082,746.07
  5. Step 5: Solve for x
    x = 250,147,082,746.07/563,392.82
  6. Step 6: Final answer
    x = 444,001.19

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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.