Home / 919,685.26-1,379,735.47-280,046.18

Finding the Fourth Proportional to 919,685.26, 1,379,735.47 and 280,046.18

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Solution

The fourth proportional to 919,685.26, 1,379,735.47 and 280,046.18 is: 420,132.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,685.26 : 1,379,735.47 = 280,046.18 : x
  2. Step 2: Convert to fraction form
    919,685.26/1,379,735.47 = 280,046.18/x
  3. Step 3: Cross multiply
    919,685.26x = 1,379,735.47 × 280,046.18
  4. Step 4: Simplify right side
    919,685.26x = 386,389,643,822.39
  5. Step 5: Solve for x
    x = 386,389,643,822.39/919,685.26
  6. Step 6: Final answer
    x = 420,132.48

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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.