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Finding the Fourth Proportional to 571,955.60, 789,393.48 and 317,388.56

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Solution

The fourth proportional to 571,955.60, 789,393.48 and 317,388.56 is: 438,048.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,955.60 : 789,393.48 = 317,388.56 : x
  2. Step 2: Convert to fraction form
    571,955.60/789,393.48 = 317,388.56/x
  3. Step 3: Cross multiply
    571,955.60x = 789,393.48 × 317,388.56
  4. Step 4: Simplify right side
    571,955.60x = 250,544,459,890.59
  5. Step 5: Solve for x
    x = 250,544,459,890.59/571,955.60
  6. Step 6: Final answer
    x = 438,048.79

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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.