Home / 1,145,795.42-1,581,242.56-783,978.14

Finding the Fourth Proportional to 1,145,795.42, 1,581,242.56 and 783,978.14

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Solution

The fourth proportional to 1,145,795.42, 1,581,242.56 and 783,978.14 is: 1,081,920.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145,795.42 : 1,581,242.56 = 783,978.14 : x
  2. Step 2: Convert to fraction form
    1,145,795.42/1,581,242.56 = 783,978.14/x
  3. Step 3: Cross multiply
    1,145,795.42x = 1,581,242.56 × 783,978.14
  4. Step 4: Simplify right side
    1,145,795.42x = 1,239,659,601,077.64
  5. Step 5: Solve for x
    x = 1,239,659,601,077.64/1,145,795.42
  6. Step 6: Final answer
    x = 1,081,920.54

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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.