Home / 739,123.12-1,019,623.22-477,388.42

Finding the Fourth Proportional to 739,123.12, 1,019,623.22 and 477,388.42

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Solution

The fourth proportional to 739,123.12, 1,019,623.22 and 477,388.42 is: 658,559.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,123.12 : 1,019,623.22 = 477,388.42 : x
  2. Step 2: Convert to fraction form
    739,123.12/1,019,623.22 = 477,388.42/x
  3. Step 3: Cross multiply
    739,123.12x = 1,019,623.22 × 477,388.42
  4. Step 4: Simplify right side
    739,123.12x = 486,756,317,991.11
  5. Step 5: Solve for x
    x = 486,756,317,991.11/739,123.12
  6. Step 6: Final answer
    x = 658,559.18

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.