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Finding the Fourth Proportional to 644,811.20, 967,216.80 and 530,649.80

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Solution

The fourth proportional to 644,811.20, 967,216.80 and 530,649.80 is: 795,974.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,811.20 : 967,216.80 = 530,649.80 : x
  2. Step 2: Convert to fraction form
    644,811.20/967,216.80 = 530,649.80/x
  3. Step 3: Cross multiply
    644,811.20x = 967,216.80 × 530,649.80
  4. Step 4: Simplify right side
    644,811.20x = 513,253,401,476.64
  5. Step 5: Solve for x
    x = 513,253,401,476.64/644,811.20
  6. Step 6: Final answer
    x = 795,974.70

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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.