Home / 627,860.20-941,790.30-438,903.40

Finding the Fourth Proportional to 627,860.20, 941,790.30 and 438,903.40

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Solution

The fourth proportional to 627,860.20, 941,790.30 and 438,903.40 is: 658,355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,860.20 : 941,790.30 = 438,903.40 : x
  2. Step 2: Convert to fraction form
    627,860.20/941,790.30 = 438,903.40/x
  3. Step 3: Cross multiply
    627,860.20x = 941,790.30 × 438,903.40
  4. Step 4: Simplify right side
    627,860.20x = 413,354,964,757.02
  5. Step 5: Solve for x
    x = 413,354,964,757.02/627,860.20
  6. Step 6: Final answer
    x = 658,355.10

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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.