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Finding the Fourth Proportional to 570,540.95, 787,371.11 and 315,892.13

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Solution

The fourth proportional to 570,540.95, 787,371.11 and 315,892.13 is: 435,944.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,540.95 : 787,371.11 = 315,892.13 : x
  2. Step 2: Convert to fraction form
    570,540.95/787,371.11 = 315,892.13/x
  3. Step 3: Cross multiply
    570,540.95x = 787,371.11 × 315,892.13
  4. Step 4: Simplify right side
    570,540.95x = 248,724,331,522.05
  5. Step 5: Solve for x
    x = 248,724,331,522.05/570,540.95
  6. Step 6: Final answer
    x = 435,944.75

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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.