Home / 920,335.79-1,380,517.97-289,249.61

Finding the Fourth Proportional to 920,335.79, 1,380,517.97 and 289,249.61

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Solution

The fourth proportional to 920,335.79, 1,380,517.97 and 289,249.61 is: 433,878.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,335.79 : 1,380,517.97 = 289,249.61 : x
  2. Step 2: Convert to fraction form
    920,335.79/1,380,517.97 = 289,249.61/x
  3. Step 3: Cross multiply
    920,335.79x = 1,380,517.97 × 289,249.61
  4. Step 4: Simplify right side
    920,335.79x = 399,314,276,071.65
  5. Step 5: Solve for x
    x = 399,314,276,071.65/920,335.79
  6. Step 6: Final answer
    x = 433,878.89

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Double scale
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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.