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Finding the Fourth Proportional to 626,793.12, 864,979.02 and 340,313.40

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Solution

The fourth proportional to 626,793.12, 864,979.02 and 340,313.40 is: 469,634.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,793.12 : 864,979.02 = 340,313.40 : x
  2. Step 2: Convert to fraction form
    626,793.12/864,979.02 = 340,313.40/x
  3. Step 3: Cross multiply
    626,793.12x = 864,979.02 × 340,313.40
  4. Step 4: Simplify right side
    626,793.12x = 294,363,951,224.87
  5. Step 5: Solve for x
    x = 294,363,951,224.87/626,793.12
  6. Step 6: Final answer
    x = 469,634.94

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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.