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Finding the Fourth Proportional to 677,431.52, 934,932.48 and 391,028.48

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Solution

The fourth proportional to 677,431.52, 934,932.48 and 391,028.48 is: 539,663.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,431.52 : 934,932.48 = 391,028.48 : x
  2. Step 2: Convert to fraction form
    677,431.52/934,932.48 = 391,028.48/x
  3. Step 3: Cross multiply
    677,431.52x = 934,932.48 × 391,028.48
  4. Step 4: Simplify right side
    677,431.52x = 365,585,226,557.03
  5. Step 5: Solve for x
    x = 365,585,226,557.03/677,431.52
  6. Step 6: Final answer
    x = 539,663.74

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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.