Home / 642,480.37-963,042.38-215,611.45

Finding the Fourth Proportional to 642,480.37, 963,042.38 and 215,611.45

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Solution

The fourth proportional to 642,480.37, 963,042.38 and 215,611.45 is: 323,189.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,480.37 : 963,042.38 = 215,611.45 : x
  2. Step 2: Convert to fraction form
    642,480.37/963,042.38 = 215,611.45/x
  3. Step 3: Cross multiply
    642,480.37x = 963,042.38 × 215,611.45
  4. Step 4: Simplify right side
    642,480.37x = 207,642,960,477.59
  5. Step 5: Solve for x
    x = 207,642,960,477.59/642,480.37
  6. Step 6: Final answer
    x = 323,189.58

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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.