Home / 691,635.38-954,464.11-389,829.38

Finding the Fourth Proportional to 691,635.38, 954,464.11 and 389,829.38

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Solution

The fourth proportional to 691,635.38, 954,464.11 and 389,829.38 is: 537,968.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,635.38 : 954,464.11 = 389,829.38 : x
  2. Step 2: Convert to fraction form
    691,635.38/954,464.11 = 389,829.38/x
  3. Step 3: Cross multiply
    691,635.38x = 954,464.11 × 389,829.38
  4. Step 4: Simplify right side
    691,635.38x = 372,078,146,486.66
  5. Step 5: Solve for x
    x = 372,078,146,486.66/691,635.38
  6. Step 6: Final answer
    x = 537,968.65

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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.