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Finding the Fourth Proportional to 644,818.80, 967,228.20 and 349,906.80

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Solution

The fourth proportional to 644,818.80, 967,228.20 and 349,906.80 is: 524,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,818.80 : 967,228.20 = 349,906.80 : x
  2. Step 2: Convert to fraction form
    644,818.80/967,228.20 = 349,906.80/x
  3. Step 3: Cross multiply
    644,818.80x = 967,228.20 × 349,906.80
  4. Step 4: Simplify right side
    644,818.80x = 338,439,724,331.76
  5. Step 5: Solve for x
    x = 338,439,724,331.76/644,818.80
  6. Step 6: Final answer
    x = 524,860.20

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Half scale
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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.