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Finding the Fourth Proportional to 543,612.60, 815,418.90 and 454,966.20

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Solution

The fourth proportional to 543,612.60, 815,418.90 and 454,966.20 is: 682,449.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,612.60 : 815,418.90 = 454,966.20 : x
  2. Step 2: Convert to fraction form
    543,612.60/815,418.90 = 454,966.20/x
  3. Step 3: Cross multiply
    543,612.60x = 815,418.90 × 454,966.20
  4. Step 4: Simplify right side
    543,612.60x = 370,988,038,341.18
  5. Step 5: Solve for x
    x = 370,988,038,341.18/543,612.60
  6. Step 6: Final answer
    x = 682,449.30

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1.5x scale

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.