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Finding the Fourth Proportional to 604,039.60, 906,059.40 and 543,905.20

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Solution

The fourth proportional to 604,039.60, 906,059.40 and 543,905.20 is: 815,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,039.60 : 906,059.40 = 543,905.20 : x
  2. Step 2: Convert to fraction form
    604,039.60/906,059.40 = 543,905.20/x
  3. Step 3: Cross multiply
    604,039.60x = 906,059.40 × 543,905.20
  4. Step 4: Simplify right side
    604,039.60x = 492,810,419,168.88
  5. Step 5: Solve for x
    x = 492,810,419,168.88/604,039.60
  6. Step 6: Final answer
    x = 815,857.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.