Home / 428,435.38-591,218.06-247,136.49

Finding the Fourth Proportional to 428,435.38, 591,218.06 and 247,136.49

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Solution

The fourth proportional to 428,435.38, 591,218.06 and 247,136.49 is: 341,035.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,435.38 : 591,218.06 = 247,136.49 : x
  2. Step 2: Convert to fraction form
    428,435.38/591,218.06 = 247,136.49/x
  3. Step 3: Cross multiply
    428,435.38x = 591,218.06 × 247,136.49
  4. Step 4: Simplify right side
    428,435.38x = 146,111,554,937.33
  5. Step 5: Solve for x
    x = 146,111,554,937.33/428,435.38
  6. Step 6: Final answer
    x = 341,035.22

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1.5x scale

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.