Home / 919,685.53-1,379,735.90-280,046.46

Finding the Fourth Proportional to 919,685.53, 1,379,735.90 and 280,046.46

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Solution

The fourth proportional to 919,685.53, 1,379,735.90 and 280,046.46 is: 420,132.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,685.53 : 1,379,735.90 = 280,046.46 : x
  2. Step 2: Convert to fraction form
    919,685.53/1,379,735.90 = 280,046.46/x
  3. Step 3: Cross multiply
    919,685.53x = 1,379,735.90 × 280,046.46
  4. Step 4: Simplify right side
    919,685.53x = 386,390,159,353.87
  5. Step 5: Solve for x
    x = 386,390,159,353.87/919,685.53
  6. Step 6: Final answer
    x = 420,132.91

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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.