Home / 1,128,687.90-1,693,027.28-408,861.34

Finding the Fourth Proportional to 1,128,687.90, 1,693,027.28 and 408,861.34

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Solution

The fourth proportional to 1,128,687.90, 1,693,027.28 and 408,861.34 is: 613,290.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,687.90 : 1,693,027.28 = 408,861.34 : x
  2. Step 2: Convert to fraction form
    1,128,687.90/1,693,027.28 = 408,861.34/x
  3. Step 3: Cross multiply
    1,128,687.90x = 1,693,027.28 × 408,861.34
  4. Step 4: Simplify right side
    1,128,687.90x = 692,213,400,313.05
  5. Step 5: Solve for x
    x = 692,213,400,313.05/1,128,687.90
  6. Step 6: Final answer
    x = 613,290.36

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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.