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Finding the Fourth Proportional to 553,080.96, 763,352.64 and 323,624.88

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Solution

The fourth proportional to 553,080.96, 763,352.64 and 323,624.88 is: 446,661.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,080.96 : 763,352.64 = 323,624.88 : x
  2. Step 2: Convert to fraction form
    553,080.96/763,352.64 = 323,624.88/x
  3. Step 3: Cross multiply
    553,080.96x = 763,352.64 × 323,624.88
  4. Step 4: Simplify right side
    553,080.96x = 247,039,906,517.68
  5. Step 5: Solve for x
    x = 247,039,906,517.68/553,080.96
  6. Step 6: Final answer
    x = 446,661.38

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1.5x scale

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.