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Finding the Fourth Proportional to 572,178.90, 789,609.96 and 317,530.29

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Solution

The fourth proportional to 572,178.90, 789,609.96 and 317,530.29 is: 438,193.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,178.90 : 789,609.96 = 317,530.29 : x
  2. Step 2: Convert to fraction form
    572,178.90/789,609.96 = 317,530.29/x
  3. Step 3: Cross multiply
    572,178.90x = 789,609.96 × 317,530.29
  4. Step 4: Simplify right side
    572,178.90x = 250,725,079,585.69
  5. Step 5: Solve for x
    x = 250,725,079,585.69/572,178.90
  6. Step 6: Final answer
    x = 438,193.51

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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.