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Finding the Fourth Proportional to 644,679.76, 966,894.57 and 612,674.38

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Solution

The fourth proportional to 644,679.76, 966,894.57 and 612,674.38 is: 918,892.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,679.76 : 966,894.57 = 612,674.38 : x
  2. Step 2: Convert to fraction form
    644,679.76/966,894.57 = 612,674.38/x
  3. Step 3: Cross multiply
    644,679.76x = 966,894.57 × 612,674.38
  4. Step 4: Simplify right side
    644,679.76x = 592,391,532,408.74
  5. Step 5: Solve for x
    x = 592,391,532,408.74/644,679.76
  6. Step 6: Final answer
    x = 918,892.71

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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.