Home / 642,767.69-963,321.14-305,911.59

Finding the Fourth Proportional to 642,767.69, 963,321.14 and 305,911.59

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Solution

The fourth proportional to 642,767.69, 963,321.14 and 305,911.59 is: 458,472.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,767.69 : 963,321.14 = 305,911.59 : x
  2. Step 2: Convert to fraction form
    642,767.69/963,321.14 = 305,911.59/x
  3. Step 3: Cross multiply
    642,767.69x = 963,321.14 × 305,911.59
  4. Step 4: Simplify right side
    642,767.69x = 294,691,102,468.27
  5. Step 5: Solve for x
    x = 294,691,102,468.27/642,767.69
  6. Step 6: Final answer
    x = 458,472.18

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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.