Home / 644,788.20-966,951.90-289,972.20

Finding the Fourth Proportional to 644,788.20, 966,951.90 and 289,972.20

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Solution

The fourth proportional to 644,788.20, 966,951.90 and 289,972.20 is: 434,854.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,788.20 : 966,951.90 = 289,972.20 : x
  2. Step 2: Convert to fraction form
    644,788.20/966,951.90 = 289,972.20/x
  3. Step 3: Cross multiply
    644,788.20x = 966,951.90 × 289,972.20
  4. Step 4: Simplify right side
    644,788.20x = 280,389,169,737.18
  5. Step 5: Solve for x
    x = 280,389,169,737.18/644,788.20
  6. Step 6: Final answer
    x = 434,854.69

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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.