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Finding the Fourth Proportional to 572,062.28, 789,445.92 and 317,415.32

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Solution

The fourth proportional to 572,062.28, 789,445.92 and 317,415.32 is: 438,033.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,062.28 : 789,445.92 = 317,415.32 : x
  2. Step 2: Convert to fraction form
    572,062.28/789,445.92 = 317,415.32/x
  3. Step 3: Cross multiply
    572,062.28x = 789,445.92 × 317,415.32
  4. Step 4: Simplify right side
    572,062.28x = 250,582,229,319.49
  5. Step 5: Solve for x
    x = 250,582,229,319.49/572,062.28
  6. Step 6: Final answer
    x = 438,033.13

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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.