Home / 642,767.60-963,320.96-305,911.47

Finding the Fourth Proportional to 642,767.60, 963,320.96 and 305,911.47

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Solution

The fourth proportional to 642,767.60, 963,320.96 and 305,911.47 is: 458,471.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,767.60 : 963,320.96 = 305,911.47 : x
  2. Step 2: Convert to fraction form
    642,767.60/963,320.96 = 305,911.47/x
  3. Step 3: Cross multiply
    642,767.60x = 963,320.96 × 305,911.47
  4. Step 4: Simplify right side
    642,767.60x = 294,690,929,425.85
  5. Step 5: Solve for x
    x = 294,690,929,425.85/642,767.60
  6. Step 6: Final answer
    x = 458,471.98

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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.