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Finding the Fourth Proportional to 615,976.02, 850,053.42 and 361,331.46

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Solution

The fourth proportional to 615,976.02, 850,053.42 and 361,331.46 is: 498,641.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,976.02 : 850,053.42 = 361,331.46 : x
  2. Step 2: Convert to fraction form
    615,976.02/850,053.42 = 361,331.46/x
  3. Step 3: Cross multiply
    615,976.02x = 850,053.42 × 361,331.46
  4. Step 4: Simplify right side
    615,976.02x = 307,151,043,326.59
  5. Step 5: Solve for x
    x = 307,151,043,326.59/615,976.02
  6. Step 6: Final answer
    x = 498,641.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.