Home / 1,991,615.16-2,987,424.57-853,638.90

Finding the Fourth Proportional to 1,991,615.16, 2,987,424.57 and 853,638.90

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Solution

The fourth proportional to 1,991,615.16, 2,987,424.57 and 853,638.90 is: 1,280,459.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,615.16 : 2,987,424.57 = 853,638.90 : x
  2. Step 2: Convert to fraction form
    1,991,615.16/2,987,424.57 = 853,638.90/x
  3. Step 3: Cross multiply
    1,991,615.16x = 2,987,424.57 × 853,638.90
  4. Step 4: Simplify right side
    1,991,615.16x = 2,550,181,823,767.77
  5. Step 5: Solve for x
    x = 2,550,181,823,767.77/1,991,615.16
  6. Step 6: Final answer
    x = 1,280,459.13

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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.