Home / 428,914.53-642,922.85-144,506.80

Finding the Fourth Proportional to 428,914.53, 642,922.85 and 144,506.80

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Solution

The fourth proportional to 428,914.53, 642,922.85 and 144,506.80 is: 216,608.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,914.53 : 642,922.85 = 144,506.80 : x
  2. Step 2: Convert to fraction form
    428,914.53/642,922.85 = 144,506.80/x
  3. Step 3: Cross multiply
    428,914.53x = 642,922.85 × 144,506.80
  4. Step 4: Simplify right side
    428,914.53x = 92,906,723,700.38
  5. Step 5: Solve for x
    x = 92,906,723,700.38/428,914.53
  6. Step 6: Final answer
    x = 216,608.94

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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.