Home / 1,991,298.03-2,987,331.57-853,901.28

Finding the Fourth Proportional to 1,991,298.03, 2,987,331.57 and 853,901.28

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Solution

The fourth proportional to 1,991,298.03, 2,987,331.57 and 853,901.28 is: 1,281,016.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,298.03 : 2,987,331.57 = 853,901.28 : x
  2. Step 2: Convert to fraction form
    1,991,298.03/2,987,331.57 = 853,901.28/x
  3. Step 3: Cross multiply
    1,991,298.03x = 2,987,331.57 × 853,901.28
  4. Step 4: Simplify right side
    1,991,298.03x = 2,550,886,251,407.41
  5. Step 5: Solve for x
    x = 2,550,886,251,407.41/1,991,298.03
  6. Step 6: Final answer
    x = 1,281,016.81

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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.