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Finding the Fourth Proportional to 713,662.84, 984,856.08 and 391,375.20

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Solution

The fourth proportional to 713,662.84, 984,856.08 and 391,375.20 is: 540,098.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,662.84 : 984,856.08 = 391,375.20 : x
  2. Step 2: Convert to fraction form
    713,662.84/984,856.08 = 391,375.20/x
  3. Step 3: Cross multiply
    713,662.84x = 984,856.08 × 391,375.20
  4. Step 4: Simplify right side
    713,662.84x = 385,448,245,281.22
  5. Step 5: Solve for x
    x = 385,448,245,281.22/713,662.84
  6. Step 6: Final answer
    x = 540,098.52

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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.