Home / 738,404.70-1,107,607.05-422,601.90

Finding the Fourth Proportional to 738,404.70, 1,107,607.05 and 422,601.90

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Solution

The fourth proportional to 738,404.70, 1,107,607.05 and 422,601.90 is: 633,902.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,404.70 : 1,107,607.05 = 422,601.90 : x
  2. Step 2: Convert to fraction form
    738,404.70/1,107,607.05 = 422,601.90/x
  3. Step 3: Cross multiply
    738,404.70x = 1,107,607.05 × 422,601.90
  4. Step 4: Simplify right side
    738,404.70x = 468,076,843,783.40
  5. Step 5: Solve for x
    x = 468,076,843,783.40/738,404.70
  6. Step 6: Final answer
    x = 633,902.85

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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.