Home / 3,121,112.50-4,681,668.75-757,208.50

Finding the Fourth Proportional to 3,121,112.50, 4,681,668.75 and 757,208.50

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Solution

The fourth proportional to 3,121,112.50, 4,681,668.75 and 757,208.50 is: 1,135,812.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,112.50 : 4,681,668.75 = 757,208.50 : x
  2. Step 2: Convert to fraction form
    3,121,112.50/4,681,668.75 = 757,208.50/x
  3. Step 3: Cross multiply
    3,121,112.50x = 4,681,668.75 × 757,208.50
  4. Step 4: Simplify right side
    3,121,112.50x = 3,544,999,371,684.38
  5. Step 5: Solve for x
    x = 3,544,999,371,684.38/3,121,112.50
  6. Step 6: Final answer
    x = 1,135,812.75

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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.