Home / 764,305.50-1,055,820.78-612,352.74

Finding the Fourth Proportional to 764,305.50, 1,055,820.78 and 612,352.74

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Solution

The fourth proportional to 764,305.50, 1,055,820.78 and 612,352.74 is: 845,911.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,305.50 : 1,055,820.78 = 612,352.74 : x
  2. Step 2: Convert to fraction form
    764,305.50/1,055,820.78 = 612,352.74/x
  3. Step 3: Cross multiply
    764,305.50x = 1,055,820.78 × 612,352.74
  4. Step 4: Simplify right side
    764,305.50x = 646,534,747,581.94
  5. Step 5: Solve for x
    x = 646,534,747,581.94/764,305.50
  6. Step 6: Final answer
    x = 845,911.42

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Double scale
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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.