Home / 830,081.70-1,245,122.55-755,286.30

Finding the Fourth Proportional to 830,081.70, 1,245,122.55 and 755,286.30

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Solution

The fourth proportional to 830,081.70, 1,245,122.55 and 755,286.30 is: 1,132,929.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,081.70 : 1,245,122.55 = 755,286.30 : x
  2. Step 2: Convert to fraction form
    830,081.70/1,245,122.55 = 755,286.30/x
  3. Step 3: Cross multiply
    830,081.70x = 1,245,122.55 × 755,286.30
  4. Step 4: Simplify right side
    830,081.70x = 940,424,003,836.07
  5. Step 5: Solve for x
    x = 940,424,003,836.07/830,081.70
  6. Step 6: Final answer
    x = 1,132,929.45

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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.