Home / 454,821.48-627,766.20-309,867.12

Finding the Fourth Proportional to 454,821.48, 627,766.20 and 309,867.12

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Solution

The fourth proportional to 454,821.48, 627,766.20 and 309,867.12 is: 427,693.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,821.48 : 627,766.20 = 309,867.12 : x
  2. Step 2: Convert to fraction form
    454,821.48/627,766.20 = 309,867.12/x
  3. Step 3: Cross multiply
    454,821.48x = 627,766.20 × 309,867.12
  4. Step 4: Simplify right side
    454,821.48x = 194,524,104,427.34
  5. Step 5: Solve for x
    x = 194,524,104,427.34/454,821.48
  6. Step 6: Final answer
    x = 427,693.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.