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Finding the Fourth Proportional to 550,964.76, 760,272.96 and 309,273.92

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Solution

The fourth proportional to 550,964.76, 760,272.96 and 309,273.92 is: 426,765.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,964.76 : 760,272.96 = 309,273.92 : x
  2. Step 2: Convert to fraction form
    550,964.76/760,272.96 = 309,273.92/x
  3. Step 3: Cross multiply
    550,964.76x = 760,272.96 × 309,273.92
  4. Step 4: Simplify right side
    550,964.76x = 235,132,600,087.07
  5. Step 5: Solve for x
    x = 235,132,600,087.07/550,964.76
  6. Step 6: Final answer
    x = 426,765.23

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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.