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Finding the Fourth Proportional to 643,488.75, 965,500.83 and 283,475.34

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Solution

The fourth proportional to 643,488.75, 965,500.83 and 283,475.34 is: 425,330.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,488.75 : 965,500.83 = 283,475.34 : x
  2. Step 2: Convert to fraction form
    643,488.75/965,500.83 = 283,475.34/x
  3. Step 3: Cross multiply
    643,488.75x = 965,500.83 × 283,475.34
  4. Step 4: Simplify right side
    643,488.75x = 273,695,676,054.53
  5. Step 5: Solve for x
    x = 273,695,676,054.53/643,488.75
  6. Step 6: Final answer
    x = 425,330.94

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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.