Home / 764,695.69-1,055,225.27-420,555.85

Finding the Fourth Proportional to 764,695.69, 1,055,225.27 and 420,555.85

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Solution

The fourth proportional to 764,695.69, 1,055,225.27 and 420,555.85 is: 580,336.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,695.69 : 1,055,225.27 = 420,555.85 : x
  2. Step 2: Convert to fraction form
    764,695.69/1,055,225.27 = 420,555.85/x
  3. Step 3: Cross multiply
    764,695.69x = 1,055,225.27 × 420,555.85
  4. Step 4: Simplify right side
    764,695.69x = 443,781,158,779.66
  5. Step 5: Solve for x
    x = 443,781,158,779.66/764,695.69
  6. Step 6: Final answer
    x = 580,336.94

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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.