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Finding the Fourth Proportional to 644,823.78, 965,752.64 and 374,281.88

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Solution

The fourth proportional to 644,823.78, 965,752.64 and 374,281.88 is: 560,562.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,823.78 : 965,752.64 = 374,281.88 : x
  2. Step 2: Convert to fraction form
    644,823.78/965,752.64 = 374,281.88/x
  3. Step 3: Cross multiply
    644,823.78x = 965,752.64 × 374,281.88
  4. Step 4: Simplify right side
    644,823.78x = 361,463,707,013.99
  5. Step 5: Solve for x
    x = 361,463,707,013.99/644,823.78
  6. Step 6: Final answer
    x = 560,562.00

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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.