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Finding the Fourth Proportional to 518,541.80, 777,812.70 and 323,850.20

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Solution

The fourth proportional to 518,541.80, 777,812.70 and 323,850.20 is: 485,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,541.80 : 777,812.70 = 323,850.20 : x
  2. Step 2: Convert to fraction form
    518,541.80/777,812.70 = 323,850.20/x
  3. Step 3: Cross multiply
    518,541.80x = 777,812.70 × 323,850.20
  4. Step 4: Simplify right side
    518,541.80x = 251,894,798,457.54
  5. Step 5: Solve for x
    x = 251,894,798,457.54/518,541.80
  6. Step 6: Final answer
    x = 485,775.30

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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.