Home / 644,432.40-966,648.60-289,616.40

Finding the Fourth Proportional to 644,432.40, 966,648.60 and 289,616.40

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Solution

The fourth proportional to 644,432.40, 966,648.60 and 289,616.40 is: 434,424.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,432.40 : 966,648.60 = 289,616.40 : x
  2. Step 2: Convert to fraction form
    644,432.40/966,648.60 = 289,616.40/x
  3. Step 3: Cross multiply
    644,432.40x = 966,648.60 × 289,616.40
  4. Step 4: Simplify right side
    644,432.40x = 279,957,287,597.04
  5. Step 5: Solve for x
    x = 279,957,287,597.04/644,432.40
  6. Step 6: Final answer
    x = 434,424.60

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Similar ratio
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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.