Home / 764,627.58-1,055,213.01-420,489.66

Finding the Fourth Proportional to 764,627.58, 1,055,213.01 and 420,489.66

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Solution

The fourth proportional to 764,627.58, 1,055,213.01 and 420,489.66 is: 580,290.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,627.58 : 1,055,213.01 = 420,489.66 : x
  2. Step 2: Convert to fraction form
    764,627.58/1,055,213.01 = 420,489.66/x
  3. Step 3: Cross multiply
    764,627.58x = 1,055,213.01 × 420,489.66
  4. Step 4: Simplify right side
    764,627.58x = 443,706,159,802.48
  5. Step 5: Solve for x
    x = 443,706,159,802.48/764,627.58
  6. Step 6: Final answer
    x = 580,290.55

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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.