Home / 674,474.58-930,962.55-388,086.90

Finding the Fourth Proportional to 674,474.58, 930,962.55 and 388,086.90

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Solution

The fourth proportional to 674,474.58, 930,962.55 and 388,086.90 is: 535,667.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,474.58 : 930,962.55 = 388,086.90 : x
  2. Step 2: Convert to fraction form
    674,474.58/930,962.55 = 388,086.90/x
  3. Step 3: Cross multiply
    674,474.58x = 930,962.55 × 388,086.90
  4. Step 4: Simplify right side
    674,474.58x = 361,294,370,045.60
  5. Step 5: Solve for x
    x = 361,294,370,045.60/674,474.58
  6. Step 6: Final answer
    x = 535,667.88

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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.