Home / 1,338,129.70-2,007,194.55-439,710.10

Finding the Fourth Proportional to 1,338,129.70, 2,007,194.55 and 439,710.10

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Solution

The fourth proportional to 1,338,129.70, 2,007,194.55 and 439,710.10 is: 659,565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,129.70 : 2,007,194.55 = 439,710.10 : x
  2. Step 2: Convert to fraction form
    1,338,129.70/2,007,194.55 = 439,710.10/x
  3. Step 3: Cross multiply
    1,338,129.70x = 2,007,194.55 × 439,710.10
  4. Step 4: Simplify right side
    1,338,129.70x = 882,583,716,299.96
  5. Step 5: Solve for x
    x = 882,583,716,299.96/1,338,129.70
  6. Step 6: Final answer
    x = 659,565.15

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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.