Home / 1,427,865.72-1,970,469.90-783,287.16

Finding the Fourth Proportional to 1,427,865.72, 1,970,469.90 and 783,287.16

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Solution

The fourth proportional to 1,427,865.72, 1,970,469.90 and 783,287.16 is: 1,080,944.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,865.72 : 1,970,469.90 = 783,287.16 : x
  2. Step 2: Convert to fraction form
    1,427,865.72/1,970,469.90 = 783,287.16/x
  3. Step 3: Cross multiply
    1,427,865.72x = 1,970,469.90 × 783,287.16
  4. Step 4: Simplify right side
    1,427,865.72x = 1,543,443,771,836.48
  5. Step 5: Solve for x
    x = 1,543,443,771,836.48/1,427,865.72
  6. Step 6: Final answer
    x = 1,080,944.62

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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.