Home / 1,209,101.60-1,811,578.80-788,160.80

Finding the Fourth Proportional to 1,209,101.60, 1,811,578.80 and 788,160.80

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Solution

The fourth proportional to 1,209,101.60, 1,811,578.80 and 788,160.80 is: 1,180,889.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,101.60 : 1,811,578.80 = 788,160.80 : x
  2. Step 2: Convert to fraction form
    1,209,101.60/1,811,578.80 = 788,160.80/x
  3. Step 3: Cross multiply
    1,209,101.60x = 1,811,578.80 × 788,160.80
  4. Step 4: Simplify right side
    1,209,101.60x = 1,427,815,396,271.04
  5. Step 5: Solve for x
    x = 1,427,815,396,271.04/1,209,101.60
  6. Step 6: Final answer
    x = 1,180,889.51

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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.