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Finding the Fourth Proportional to 663,358.20, 995,447.70 and 348,041.40

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Solution

The fourth proportional to 663,358.20, 995,447.70 and 348,041.40 is: 522,277.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,358.20 : 995,447.70 = 348,041.40 : x
  2. Step 2: Convert to fraction form
    663,358.20/995,447.70 = 348,041.40/x
  3. Step 3: Cross multiply
    663,358.20x = 995,447.70 × 348,041.40
  4. Step 4: Simplify right side
    663,358.20x = 346,457,011,134.78
  5. Step 5: Solve for x
    x = 346,457,011,134.78/663,358.20
  6. Step 6: Final answer
    x = 522,277.42

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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.