Home / 1,489,449.17-2,055,439.77-810,390.53

Finding the Fourth Proportional to 1,489,449.17, 2,055,439.77 and 810,390.53

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Solution

The fourth proportional to 1,489,449.17, 2,055,439.77 and 810,390.53 is: 1,118,338.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,449.17 : 2,055,439.77 = 810,390.53 : x
  2. Step 2: Convert to fraction form
    1,489,449.17/2,055,439.77 = 810,390.53/x
  3. Step 3: Cross multiply
    1,489,449.17x = 2,055,439.77 × 810,390.53
  4. Step 4: Simplify right side
    1,489,449.17x = 1,665,708,924,593.38
  5. Step 5: Solve for x
    x = 1,665,708,924,593.38/1,489,449.17
  6. Step 6: Final answer
    x = 1,118,338.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.