Home / 1,149,437.78-1,586,273.34-640,140.15

Finding the Fourth Proportional to 1,149,437.78, 1,586,273.34 and 640,140.15

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Solution

The fourth proportional to 1,149,437.78, 1,586,273.34 and 640,140.15 is: 883,420.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149,437.78 : 1,586,273.34 = 640,140.15 : x
  2. Step 2: Convert to fraction form
    1,149,437.78/1,586,273.34 = 640,140.15/x
  3. Step 3: Cross multiply
    1,149,437.78x = 1,586,273.34 × 640,140.15
  4. Step 4: Simplify right side
    1,149,437.78x = 1,015,437,253,808.60
  5. Step 5: Solve for x
    x = 1,015,437,253,808.60/1,149,437.78
  6. Step 6: Final answer
    x = 883,420.81

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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.