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Finding the Fourth Proportional to 571,901.58, 789,318.78 and 317,334.78

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Solution

The fourth proportional to 571,901.58, 789,318.78 and 317,334.78 is: 437,974.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,901.58 : 789,318.78 = 317,334.78 : x
  2. Step 2: Convert to fraction form
    571,901.58/789,318.78 = 317,334.78/x
  3. Step 3: Cross multiply
    571,901.58x = 789,318.78 × 317,334.78
  4. Step 4: Simplify right side
    571,901.58x = 250,478,301,401.17
  5. Step 5: Solve for x
    x = 250,478,301,401.17/571,901.58
  6. Step 6: Final answer
    x = 437,974.49

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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.