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Finding the Fourth Proportional to 545,905.40, 818,858.10 and 488,168.60

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Solution

The fourth proportional to 545,905.40, 818,858.10 and 488,168.60 is: 732,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,905.40 : 818,858.10 = 488,168.60 : x
  2. Step 2: Convert to fraction form
    545,905.40/818,858.10 = 488,168.60/x
  3. Step 3: Cross multiply
    545,905.40x = 818,858.10 × 488,168.60
  4. Step 4: Simplify right side
    545,905.40x = 399,740,812,275.66
  5. Step 5: Solve for x
    x = 399,740,812,275.66/545,905.40
  6. Step 6: Final answer
    x = 732,252.90

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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.