Home / 1,338,136.70-2,007,205.05-439,717.10

Finding the Fourth Proportional to 1,338,136.70, 2,007,205.05 and 439,717.10

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Solution

The fourth proportional to 1,338,136.70, 2,007,205.05 and 439,717.10 is: 659,575.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,136.70 : 2,007,205.05 = 439,717.10 : x
  2. Step 2: Convert to fraction form
    1,338,136.70/2,007,205.05 = 439,717.10/x
  3. Step 3: Cross multiply
    1,338,136.70x = 2,007,205.05 × 439,717.10
  4. Step 4: Simplify right side
    1,338,136.70x = 882,602,383,691.36
  5. Step 5: Solve for x
    x = 882,602,383,691.36/1,338,136.70
  6. Step 6: Final answer
    x = 659,575.65

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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.