Home / 1,419,631.40-2,129,447.10-422,359.40

Finding the Fourth Proportional to 1,419,631.40, 2,129,447.10 and 422,359.40

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Solution

The fourth proportional to 1,419,631.40, 2,129,447.10 and 422,359.40 is: 633,539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,631.40 : 2,129,447.10 = 422,359.40 : x
  2. Step 2: Convert to fraction form
    1,419,631.40/2,129,447.10 = 422,359.40/x
  3. Step 3: Cross multiply
    1,419,631.40x = 2,129,447.10 × 422,359.40
  4. Step 4: Simplify right side
    1,419,631.40x = 899,391,999,487.74
  5. Step 5: Solve for x
    x = 899,391,999,487.74/1,419,631.40
  6. Step 6: Final answer
    x = 633,539.10

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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.