Home / 985,971.84-1,478,957.82-321,123.84

Finding the Fourth Proportional to 985,971.84, 1,478,957.82 and 321,123.84

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Solution

The fourth proportional to 985,971.84, 1,478,957.82 and 321,123.84 is: 481,685.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,971.84 : 1,478,957.82 = 321,123.84 : x
  2. Step 2: Convert to fraction form
    985,971.84/1,478,957.82 = 321,123.84/x
  3. Step 3: Cross multiply
    985,971.84x = 1,478,957.82 × 321,123.84
  4. Step 4: Simplify right side
    985,971.84x = 474,928,614,356.43
  5. Step 5: Solve for x
    x = 474,928,614,356.43/985,971.84
  6. Step 6: Final answer
    x = 481,685.78

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Double scale
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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.