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Finding the Fourth Proportional to 644,370.48, 966,873.24 and 289,642.32

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Solution

The fourth proportional to 644,370.48, 966,873.24 and 289,642.32 is: 434,606.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,370.48 : 966,873.24 = 289,642.32 : x
  2. Step 2: Convert to fraction form
    644,370.48/966,873.24 = 289,642.32/x
  3. Step 3: Cross multiply
    644,370.48x = 966,873.24 × 289,642.32
  4. Step 4: Simplify right side
    644,370.48x = 280,047,408,379.52
  5. Step 5: Solve for x
    x = 280,047,408,379.52/644,370.48
  6. Step 6: Final answer
    x = 434,606.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.