Home / 642,109.54-963,173.79-305,184.58

Finding the Fourth Proportional to 642,109.54, 963,173.79 and 305,184.58

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Solution

The fourth proportional to 642,109.54, 963,173.79 and 305,184.58 is: 457,781.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,109.54 : 963,173.79 = 305,184.58 : x
  2. Step 2: Convert to fraction form
    642,109.54/963,173.79 = 305,184.58/x
  3. Step 3: Cross multiply
    642,109.54x = 963,173.79 × 305,184.58
  4. Step 4: Simplify right side
    642,109.54x = 293,945,788,568.16
  5. Step 5: Solve for x
    x = 293,945,788,568.16/642,109.54
  6. Step 6: Final answer
    x = 457,781.38

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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.