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Finding the Fourth Proportional to 550,906.49, 760,325.14 and 309,202.28

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Solution

The fourth proportional to 550,906.49, 760,325.14 and 309,202.28 is: 426,740.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,906.49 : 760,325.14 = 309,202.28 : x
  2. Step 2: Convert to fraction form
    550,906.49/760,325.14 = 309,202.28/x
  3. Step 3: Cross multiply
    550,906.49x = 760,325.14 × 309,202.28
  4. Step 4: Simplify right side
    550,906.49x = 235,094,265,283.31
  5. Step 5: Solve for x
    x = 235,094,265,283.31/550,906.49
  6. Step 6: Final answer
    x = 426,740.78

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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.