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Finding the Fourth Proportional to 713,489.74, 984,608.34 and 391,199.04

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Solution

The fourth proportional to 713,489.74, 984,608.34 and 391,199.04 is: 539,850.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,489.74 : 984,608.34 = 391,199.04 : x
  2. Step 2: Convert to fraction form
    713,489.74/984,608.34 = 391,199.04/x
  3. Step 3: Cross multiply
    713,489.74x = 984,608.34 × 391,199.04
  4. Step 4: Simplify right side
    713,489.74x = 385,177,837,383.99
  5. Step 5: Solve for x
    x = 385,177,837,383.99/713,489.74
  6. Step 6: Final answer
    x = 539,850.56

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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.