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Finding the Fourth Proportional to 644,019.70, 966,029.55 and 170,752.90

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Solution

The fourth proportional to 644,019.70, 966,029.55 and 170,752.90 is: 256,129.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,019.70 : 966,029.55 = 170,752.90 : x
  2. Step 2: Convert to fraction form
    644,019.70/966,029.55 = 170,752.90/x
  3. Step 3: Cross multiply
    644,019.70x = 966,029.55 × 170,752.90
  4. Step 4: Simplify right side
    644,019.70x = 164,952,347,148.20
  5. Step 5: Solve for x
    x = 164,952,347,148.20/644,019.70
  6. Step 6: Final answer
    x = 256,129.35

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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.