Home / 759,887.47-1,140,278.78-280,452.79

Finding the Fourth Proportional to 759,887.47, 1,140,278.78 and 280,452.79

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Solution

The fourth proportional to 759,887.47, 1,140,278.78 and 280,452.79 is: 420,844.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,887.47 : 1,140,278.78 = 280,452.79 : x
  2. Step 2: Convert to fraction form
    759,887.47/1,140,278.78 = 280,452.79/x
  3. Step 3: Cross multiply
    759,887.47x = 1,140,278.78 × 280,452.79
  4. Step 4: Simplify right side
    759,887.47x = 319,794,365,228.80
  5. Step 5: Solve for x
    x = 319,794,365,228.80/759,887.47
  6. Step 6: Final answer
    x = 420,844.37

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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.