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Finding the Fourth Proportional to 572,587, 790,194.42 and 317,938

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Solution

The fourth proportional to 572,587, 790,194.42 and 317,938 is: 438,767.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,587 : 790,194.42 = 317,938 : x
  2. Step 2: Convert to fraction form
    572,587/790,194.42 = 317,938/x
  3. Step 3: Cross multiply
    572,587x = 790,194.42 × 317,938
  4. Step 4: Simplify right side
    572,587x = 251,232,833,505.96
  5. Step 5: Solve for x
    x = 251,232,833,505.96/572,587
  6. Step 6: Final answer
    x = 438,767.97

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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.