Home / 1,390,169.70-2,085,254.55-491,604.30

Finding the Fourth Proportional to 1,390,169.70, 2,085,254.55 and 491,604.30

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Solution

The fourth proportional to 1,390,169.70, 2,085,254.55 and 491,604.30 is: 737,406.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,169.70 : 2,085,254.55 = 491,604.30 : x
  2. Step 2: Convert to fraction form
    1,390,169.70/2,085,254.55 = 491,604.30/x
  3. Step 3: Cross multiply
    1,390,169.70x = 2,085,254.55 × 491,604.30
  4. Step 4: Simplify right side
    1,390,169.70x = 1,025,120,103,374.57
  5. Step 5: Solve for x
    x = 1,025,120,103,374.57/1,390,169.70
  6. Step 6: Final answer
    x = 737,406.45

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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.