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Finding the Fourth Proportional to 644,767.70, 966,921.15 and 289,951.70

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Solution

The fourth proportional to 644,767.70, 966,921.15 and 289,951.70 is: 434,823.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,767.70 : 966,921.15 = 289,951.70 : x
  2. Step 2: Convert to fraction form
    644,767.70/966,921.15 = 289,951.70/x
  3. Step 3: Cross multiply
    644,767.70x = 966,921.15 × 289,951.70
  4. Step 4: Simplify right side
    644,767.70x = 280,360,431,208.46
  5. Step 5: Solve for x
    x = 280,360,431,208.46/644,767.70
  6. Step 6: Final answer
    x = 434,823.94

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1.5x scale

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.