Home / 920,168.64-1,380,392.28-289,023.12

Finding the Fourth Proportional to 920,168.64, 1,380,392.28 and 289,023.12

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Solution

The fourth proportional to 920,168.64, 1,380,392.28 and 289,023.12 is: 433,578.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,168.64 : 1,380,392.28 = 289,023.12 : x
  2. Step 2: Convert to fraction form
    920,168.64/1,380,392.28 = 289,023.12/x
  3. Step 3: Cross multiply
    920,168.64x = 1,380,392.28 × 289,023.12
  4. Step 4: Simplify right side
    920,168.64x = 398,965,283,589.51
  5. Step 5: Solve for x
    x = 398,965,283,589.51/920,168.64
  6. Step 6: Final answer
    x = 433,578.44

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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.