Home / 989,643.60-1,484,119.80-516,171.60

Finding the Fourth Proportional to 989,643.60, 1,484,119.80 and 516,171.60

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Solution

The fourth proportional to 989,643.60, 1,484,119.80 and 516,171.60 is: 774,077.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,643.60 : 1,484,119.80 = 516,171.60 : x
  2. Step 2: Convert to fraction form
    989,643.60/1,484,119.80 = 516,171.60/x
  3. Step 3: Cross multiply
    989,643.60x = 1,484,119.80 × 516,171.60
  4. Step 4: Simplify right side
    989,643.60x = 766,060,491,757.68
  5. Step 5: Solve for x
    x = 766,060,491,757.68/989,643.60
  6. Step 6: Final answer
    x = 774,077.14

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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.