Home / 551,147.35-760,563.83-309,440.11

Finding the Fourth Proportional to 551,147.35, 760,563.83 and 309,440.11

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Solution

The fourth proportional to 551,147.35, 760,563.83 and 309,440.11 is: 427,016.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,147.35 : 760,563.83 = 309,440.11 : x
  2. Step 2: Convert to fraction form
    551,147.35/760,563.83 = 309,440.11/x
  3. Step 3: Cross multiply
    551,147.35x = 760,563.83 × 309,440.11
  4. Step 4: Simplify right side
    551,147.35x = 235,348,954,844.41
  5. Step 5: Solve for x
    x = 235,348,954,844.41/551,147.35
  6. Step 6: Final answer
    x = 427,016.40

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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.