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Finding the Fourth Proportional to 800,611.90, 1,104,735.26 and 478,253.57

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Solution

The fourth proportional to 800,611.90, 1,104,735.26 and 478,253.57 is: 659,924.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,611.90 : 1,104,735.26 = 478,253.57 : x
  2. Step 2: Convert to fraction form
    800,611.90/1,104,735.26 = 478,253.57/x
  3. Step 3: Cross multiply
    800,611.90x = 1,104,735.26 × 478,253.57
  4. Step 4: Simplify right side
    800,611.90x = 528,343,577,671.84
  5. Step 5: Solve for x
    x = 528,343,577,671.84/800,611.90
  6. Step 6: Final answer
    x = 659,924.71

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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.