Home / 780,100.05-1,170,150.08-543,709.65

Finding the Fourth Proportional to 780,100.05, 1,170,150.08 and 543,709.65

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Solution

The fourth proportional to 780,100.05, 1,170,150.08 and 543,709.65 is: 815,564.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,100.05 : 1,170,150.08 = 543,709.65 : x
  2. Step 2: Convert to fraction form
    780,100.05/1,170,150.08 = 543,709.65/x
  3. Step 3: Cross multiply
    780,100.05x = 1,170,150.08 × 543,709.65
  4. Step 4: Simplify right side
    780,100.05x = 636,221,887,725.72
  5. Step 5: Solve for x
    x = 636,221,887,725.72/780,100.05
  6. Step 6: Final answer
    x = 815,564.48

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Double scale
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Similar ratio
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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.