Home / 920,308.91-1,380,526.44-312,850.04

Finding the Fourth Proportional to 920,308.91, 1,380,526.44 and 312,850.04

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Solution

The fourth proportional to 920,308.91, 1,380,526.44 and 312,850.04 is: 469,296.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,308.91 : 1,380,526.44 = 312,850.04 : x
  2. Step 2: Convert to fraction form
    920,308.91/1,380,526.44 = 312,850.04/x
  3. Step 3: Cross multiply
    920,308.91x = 1,380,526.44 × 312,850.04
  4. Step 4: Simplify right side
    920,308.91x = 431,897,745,072.43
  5. Step 5: Solve for x
    x = 431,897,745,072.43/920,308.91
  6. Step 6: Final answer
    x = 469,296.49

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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.