Home / 1,085,142.80-1,628,491.80-611,325.20

Finding the Fourth Proportional to 1,085,142.80, 1,628,491.80 and 611,325.20

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Solution

The fourth proportional to 1,085,142.80, 1,628,491.80 and 611,325.20 is: 917,425.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085,142.80 : 1,628,491.80 = 611,325.20 : x
  2. Step 2: Convert to fraction form
    1,085,142.80/1,628,491.80 = 611,325.20/x
  3. Step 3: Cross multiply
    1,085,142.80x = 1,628,491.80 × 611,325.20
  4. Step 4: Simplify right side
    1,085,142.80x = 995,538,075,333.36
  5. Step 5: Solve for x
    x = 995,538,075,333.36/1,085,142.80
  6. Step 6: Final answer
    x = 917,425.87

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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.