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Finding the Fourth Proportional to 671,999.80, 1,007,999.70 and 546,028.60

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Solution

The fourth proportional to 671,999.80, 1,007,999.70 and 546,028.60 is: 819,042.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,999.80 : 1,007,999.70 = 546,028.60 : x
  2. Step 2: Convert to fraction form
    671,999.80/1,007,999.70 = 546,028.60/x
  3. Step 3: Cross multiply
    671,999.80x = 1,007,999.70 × 546,028.60
  4. Step 4: Simplify right side
    671,999.80x = 550,396,664,991.42
  5. Step 5: Solve for x
    x = 550,396,664,991.42/671,999.80
  6. Step 6: Final answer
    x = 819,042.90

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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.