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Finding the Fourth Proportional to 713,652.40, 984,837.72 and 391,354.48

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Solution

The fourth proportional to 713,652.40, 984,837.72 and 391,354.48 is: 540,067.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,652.40 : 984,837.72 = 391,354.48 : x
  2. Step 2: Convert to fraction form
    713,652.40/984,837.72 = 391,354.48/x
  3. Step 3: Cross multiply
    713,652.40x = 984,837.72 × 391,354.48
  4. Step 4: Simplify right side
    713,652.40x = 385,420,653,794.99
  5. Step 5: Solve for x
    x = 385,420,653,794.99/713,652.40
  6. Step 6: Final answer
    x = 540,067.76

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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.