Home / 920,380.36-1,380,630.06-289,318.60

Finding the Fourth Proportional to 920,380.36, 1,380,630.06 and 289,318.60

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Solution

The fourth proportional to 920,380.36, 1,380,630.06 and 289,318.60 is: 433,996.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,380.36 : 1,380,630.06 = 289,318.60 : x
  2. Step 2: Convert to fraction form
    920,380.36/1,380,630.06 = 289,318.60/x
  3. Step 3: Cross multiply
    920,380.36x = 1,380,630.06 × 289,318.60
  4. Step 4: Simplify right side
    920,380.36x = 399,441,956,077.12
  5. Step 5: Solve for x
    x = 399,441,956,077.12/920,380.36
  6. Step 6: Final answer
    x = 433,996.61

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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.