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Finding the Fourth Proportional to 636,818.64, 954,440.64 and 321,365.76

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Solution

The fourth proportional to 636,818.64, 954,440.64 and 321,365.76 is: 481,651.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,818.64 : 954,440.64 = 321,365.76 : x
  2. Step 2: Convert to fraction form
    636,818.64/954,440.64 = 321,365.76/x
  3. Step 3: Cross multiply
    636,818.64x = 954,440.64 × 321,365.76
  4. Step 4: Simplify right side
    636,818.64x = 306,724,541,648.49
  5. Step 5: Solve for x
    x = 306,724,541,648.49/636,818.64
  6. Step 6: Final answer
    x = 481,651.32

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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.