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Finding the Fourth Proportional to 662,938.80, 994,753.80 and 288,999.60

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Solution

The fourth proportional to 662,938.80, 994,753.80 and 288,999.60 is: 433,650.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,938.80 : 994,753.80 = 288,999.60 : x
  2. Step 2: Convert to fraction form
    662,938.80/994,753.80 = 288,999.60/x
  3. Step 3: Cross multiply
    662,938.80x = 994,753.80 × 288,999.60
  4. Step 4: Simplify right side
    662,938.80x = 287,483,450,298.48
  5. Step 5: Solve for x
    x = 287,483,450,298.48/662,938.80
  6. Step 6: Final answer
    x = 433,650.06

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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.