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Finding the Fourth Proportional to 713,380.35, 984,453.70 and 391,093.10

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Solution

The fourth proportional to 713,380.35, 984,453.70 and 391,093.10 is: 539,702.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,380.35 : 984,453.70 = 391,093.10 : x
  2. Step 2: Convert to fraction form
    713,380.35/984,453.70 = 391,093.10/x
  3. Step 3: Cross multiply
    713,380.35x = 984,453.70 × 391,093.10
  4. Step 4: Simplify right side
    713,380.35x = 385,013,049,339.47
  5. Step 5: Solve for x
    x = 385,013,049,339.47/713,380.35
  6. Step 6: Final answer
    x = 539,702.35

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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.