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Finding the Fourth Proportional to 644,779.70, 967,169.55 and 325,915.10

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Solution

The fourth proportional to 644,779.70, 967,169.55 and 325,915.10 is: 488,872.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,779.70 : 967,169.55 = 325,915.10 : x
  2. Step 2: Convert to fraction form
    644,779.70/967,169.55 = 325,915.10/x
  3. Step 3: Cross multiply
    644,779.70x = 967,169.55 × 325,915.10
  4. Step 4: Simplify right side
    644,779.70x = 315,215,160,605.21
  5. Step 5: Solve for x
    x = 315,215,160,605.21/644,779.70
  6. Step 6: Final answer
    x = 488,872.65

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Double scale
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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.