Home / 1,390,559.70-2,085,839.55-443,999.70

Finding the Fourth Proportional to 1,390,559.70, 2,085,839.55 and 443,999.70

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Solution

The fourth proportional to 1,390,559.70, 2,085,839.55 and 443,999.70 is: 665,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,559.70 : 2,085,839.55 = 443,999.70 : x
  2. Step 2: Convert to fraction form
    1,390,559.70/2,085,839.55 = 443,999.70/x
  3. Step 3: Cross multiply
    1,390,559.70x = 2,085,839.55 × 443,999.70
  4. Step 4: Simplify right side
    1,390,559.70x = 926,112,134,448.14
  5. Step 5: Solve for x
    x = 926,112,134,448.14/1,390,559.70
  6. Step 6: Final answer
    x = 665,999.55

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Double scale
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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.