Home / 764,241.60-1,143,640.80-665,486.40

Finding the Fourth Proportional to 764,241.60, 1,143,640.80 and 665,486.40

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Solution

The fourth proportional to 764,241.60, 1,143,640.80 and 665,486.40 is: 995,859.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,241.60 : 1,143,640.80 = 665,486.40 : x
  2. Step 2: Convert to fraction form
    764,241.60/1,143,640.80 = 665,486.40/x
  3. Step 3: Cross multiply
    764,241.60x = 1,143,640.80 × 665,486.40
  4. Step 4: Simplify right side
    764,241.60x = 761,077,398,885.12
  5. Step 5: Solve for x
    x = 761,077,398,885.12/764,241.60
  6. Step 6: Final answer
    x = 995,859.68

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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.