Home / 905,205.35-1,357,807.82-231,287.91

Finding the Fourth Proportional to 905,205.35, 1,357,807.82 and 231,287.91

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Solution

The fourth proportional to 905,205.35, 1,357,807.82 and 231,287.91 is: 346,931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,205.35 : 1,357,807.82 = 231,287.91 : x
  2. Step 2: Convert to fraction form
    905,205.35/1,357,807.82 = 231,287.91/x
  3. Step 3: Cross multiply
    905,205.35x = 1,357,807.82 × 231,287.91
  4. Step 4: Simplify right side
    905,205.35x = 314,044,531,713.02
  5. Step 5: Solve for x
    x = 314,044,531,713.02/905,205.35
  6. Step 6: Final answer
    x = 346,931.81

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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.