Home / 1,661,259.48-2,490,139.56-861,692.28

Finding the Fourth Proportional to 1,661,259.48, 2,490,139.56 and 861,692.28

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Solution

The fourth proportional to 1,661,259.48, 2,490,139.56 and 861,692.28 is: 1,291,630.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661,259.48 : 2,490,139.56 = 861,692.28 : x
  2. Step 2: Convert to fraction form
    1,661,259.48/2,490,139.56 = 861,692.28/x
  3. Step 3: Cross multiply
    1,661,259.48x = 2,490,139.56 × 861,692.28
  4. Step 4: Simplify right side
    1,661,259.48x = 2,145,734,034,974.60
  5. Step 5: Solve for x
    x = 2,145,734,034,974.60/1,661,259.48
  6. Step 6: Final answer
    x = 1,291,630.87

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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.