Home / 1,485,626.40-2,222,534.70-1,288,140.30

Finding the Fourth Proportional to 1,485,626.40, 2,222,534.70 and 1,288,140.30

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Solution

The fourth proportional to 1,485,626.40, 2,222,534.70 and 1,288,140.30 is: 1,927,090.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485,626.40 : 2,222,534.70 = 1,288,140.30 : x
  2. Step 2: Convert to fraction form
    1,485,626.40/2,222,534.70 = 1,288,140.30/x
  3. Step 3: Cross multiply
    1,485,626.40x = 2,222,534.70 × 1,288,140.30
  4. Step 4: Simplify right side
    1,485,626.40x = 2,862,936,515,218.41
  5. Step 5: Solve for x
    x = 2,862,936,515,218.41/1,485,626.40
  6. Step 6: Final answer
    x = 1,927,090.50

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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.