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Finding the Fourth Proportional to 551,441.59, 760,974.19 and 306,420.01

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Solution

The fourth proportional to 551,441.59, 760,974.19 and 306,420.01 is: 422,851.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,441.59 : 760,974.19 = 306,420.01 : x
  2. Step 2: Convert to fraction form
    551,441.59/760,974.19 = 306,420.01/x
  3. Step 3: Cross multiply
    551,441.59x = 760,974.19 × 306,420.01
  4. Step 4: Simplify right side
    551,441.59x = 233,177,722,245.15
  5. Step 5: Solve for x
    x = 233,177,722,245.15/551,441.59
  6. Step 6: Final answer
    x = 422,851.17

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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.