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Finding the Fourth Proportional to 599,472.72, 827,638.96 and 390,120.12

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Solution

The fourth proportional to 599,472.72, 827,638.96 and 390,120.12 is: 538,604.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    599,472.72 : 827,638.96 = 390,120.12 : x
  2. Step 2: Convert to fraction form
    599,472.72/827,638.96 = 390,120.12/x
  3. Step 3: Cross multiply
    599,472.72x = 827,638.96 × 390,120.12
  4. Step 4: Simplify right side
    599,472.72x = 322,878,610,391.88
  5. Step 5: Solve for x
    x = 322,878,610,391.88/599,472.72
  6. Step 6: Final answer
    x = 538,604.34

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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.