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Finding the Fourth Proportional to 572,419.56, 789,908.10 and 317,754.34

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Solution

The fourth proportional to 572,419.56, 789,908.10 and 317,754.34 is: 438,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,419.56 : 789,908.10 = 317,754.34 : x
  2. Step 2: Convert to fraction form
    572,419.56/789,908.10 = 317,754.34/x
  3. Step 3: Cross multiply
    572,419.56x = 789,908.10 × 317,754.34
  4. Step 4: Simplify right side
    572,419.56x = 250,996,726,976.15
  5. Step 5: Solve for x
    x = 250,996,726,976.15/572,419.56
  6. Step 6: Final answer
    x = 438,483.84

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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.