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Finding the Fourth Proportional to 550,783.92, 760,020.12 and 309,016.20

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Solution

The fourth proportional to 550,783.92, 760,020.12 and 309,016.20 is: 426,407.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,783.92 : 760,020.12 = 309,016.20 : x
  2. Step 2: Convert to fraction form
    550,783.92/760,020.12 = 309,016.20/x
  3. Step 3: Cross multiply
    550,783.92x = 760,020.12 × 309,016.20
  4. Step 4: Simplify right side
    550,783.92x = 234,858,529,405.94
  5. Step 5: Solve for x
    x = 234,858,529,405.94/550,783.92
  6. Step 6: Final answer
    x = 426,407.75

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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.