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Finding the Fourth Proportional to 663,345.20, 995,428.20 and 348,028.40

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Solution

The fourth proportional to 663,345.20, 995,428.20 and 348,028.40 is: 522,257.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,345.20 : 995,428.20 = 348,028.40 : x
  2. Step 2: Convert to fraction form
    663,345.20/995,428.20 = 348,028.40/x
  3. Step 3: Cross multiply
    663,345.20x = 995,428.20 × 348,028.40
  4. Step 4: Simplify right side
    663,345.20x = 346,437,283,760.88
  5. Step 5: Solve for x
    x = 346,437,283,760.88/663,345.20
  6. Step 6: Final answer
    x = 522,257.92

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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.