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Finding the Fourth Proportional to 613,464, 920,343.68 and 192,739.72

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Solution

The fourth proportional to 613,464, 920,343.68 and 192,739.72 is: 289,155.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,464 : 920,343.68 = 192,739.72 : x
  2. Step 2: Convert to fraction form
    613,464/920,343.68 = 192,739.72/x
  3. Step 3: Cross multiply
    613,464x = 920,343.68 × 192,739.72
  4. Step 4: Simplify right side
    613,464x = 177,386,783,186.97
  5. Step 5: Solve for x
    x = 177,386,783,186.97/613,464
  6. Step 6: Final answer
    x = 289,155.98

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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.