Home / 2,990,437.60-4,485,656.40-2,187,371.20

Finding the Fourth Proportional to 2,990,437.60, 4,485,656.40 and 2,187,371.20

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Solution

The fourth proportional to 2,990,437.60, 4,485,656.40 and 2,187,371.20 is: 3,281,056.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990,437.60 : 4,485,656.40 = 2,187,371.20 : x
  2. Step 2: Convert to fraction form
    2,990,437.60/4,485,656.40 = 2,187,371.20/x
  3. Step 3: Cross multiply
    2,990,437.60x = 4,485,656.40 × 2,187,371.20
  4. Step 4: Simplify right side
    2,990,437.60x = 9,811,795,622,455.68
  5. Step 5: Solve for x
    x = 9,811,795,622,455.68/2,990,437.60
  6. Step 6: Final answer
    x = 3,281,056.80

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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.