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Finding the Fourth Proportional to 713,494.32, 984,614.60 and 391,203.62

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Solution

The fourth proportional to 713,494.32, 984,614.60 and 391,203.62 is: 539,856.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,494.32 : 984,614.60 = 391,203.62 : x
  2. Step 2: Convert to fraction form
    713,494.32/984,614.60 = 391,203.62/x
  3. Step 3: Cross multiply
    713,494.32x = 984,614.60 × 391,203.62
  4. Step 4: Simplify right side
    713,494.32x = 385,184,795,824.85
  5. Step 5: Solve for x
    x = 385,184,795,824.85/713,494.32
  6. Step 6: Final answer
    x = 539,856.85

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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.