Home / 1,619,276.80-2,430,470.40-821,459.20

Finding the Fourth Proportional to 1,619,276.80, 2,430,470.40 and 821,459.20

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Solution

The fourth proportional to 1,619,276.80, 2,430,470.40 and 821,459.20 is: 1,232,977.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619,276.80 : 2,430,470.40 = 821,459.20 : x
  2. Step 2: Convert to fraction form
    1,619,276.80/2,430,470.40 = 821,459.20/x
  3. Step 3: Cross multiply
    1,619,276.80x = 2,430,470.40 × 821,459.20
  4. Step 4: Simplify right side
    1,619,276.80x = 1,996,532,270,407.68
  5. Step 5: Solve for x
    x = 1,996,532,270,407.68/1,619,276.80
  6. Step 6: Final answer
    x = 1,232,977.75

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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.