Home / 925,218-1,387,123.74-640,150.74

Finding the Fourth Proportional to 925,218, 1,387,123.74 and 640,150.74

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Solution

The fourth proportional to 925,218, 1,387,123.74 and 640,150.74 is: 959,739.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,218 : 1,387,123.74 = 640,150.74 : x
  2. Step 2: Convert to fraction form
    925,218/1,387,123.74 = 640,150.74/x
  3. Step 3: Cross multiply
    925,218x = 1,387,123.74 × 640,150.74
  4. Step 4: Simplify right side
    925,218x = 887,968,288,632.57
  5. Step 5: Solve for x
    x = 887,968,288,632.57/925,218
  6. Step 6: Final answer
    x = 959,739.53

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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.