Home / 642,117.60-963,185.76-305,192.61

Finding the Fourth Proportional to 642,117.60, 963,185.76 and 305,192.61

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Solution

The fourth proportional to 642,117.60, 963,185.76 and 305,192.61 is: 457,793.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,117.60 : 963,185.76 = 305,192.61 : x
  2. Step 2: Convert to fraction form
    642,117.60/963,185.76 = 305,192.61/x
  3. Step 3: Cross multiply
    642,117.60x = 963,185.76 × 305,192.61
  4. Step 4: Simplify right side
    642,117.60x = 293,957,176,009.23
  5. Step 5: Solve for x
    x = 293,957,176,009.23/642,117.60
  6. Step 6: Final answer
    x = 457,793.36

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Similar ratio
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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.