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Finding the Fourth Proportional to 545,912.40, 818,868.60 and 488,175.60

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Solution

The fourth proportional to 545,912.40, 818,868.60 and 488,175.60 is: 732,263.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,912.40 : 818,868.60 = 488,175.60 : x
  2. Step 2: Convert to fraction form
    545,912.40/818,868.60 = 488,175.60/x
  3. Step 3: Cross multiply
    545,912.40x = 818,868.60 × 488,175.60
  4. Step 4: Simplify right side
    545,912.40x = 399,751,670,126.16
  5. Step 5: Solve for x
    x = 399,751,670,126.16/545,912.40
  6. Step 6: Final answer
    x = 732,263.40

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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.