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Finding the Fourth Proportional to 572,397.49, 789,868.96 and 317,728.63

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Solution

The fourth proportional to 572,397.49, 789,868.96 and 317,728.63 is: 438,443.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,397.49 : 789,868.96 = 317,728.63 : x
  2. Step 2: Convert to fraction form
    572,397.49/789,868.96 = 317,728.63/x
  3. Step 3: Cross multiply
    572,397.49x = 789,868.96 × 317,728.63
  4. Step 4: Simplify right side
    572,397.49x = 250,963,982,540.33
  5. Step 5: Solve for x
    x = 250,963,982,540.33/572,397.49
  6. Step 6: Final answer
    x = 438,443.54

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1.5x scale

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.