Home / 904,908.78-1,357,138.89-305,856.72

Finding the Fourth Proportional to 904,908.78, 1,357,138.89 and 305,856.72

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Solution

The fourth proportional to 904,908.78, 1,357,138.89 and 305,856.72 is: 458,709.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,908.78 : 1,357,138.89 = 305,856.72 : x
  2. Step 2: Convert to fraction form
    904,908.78/1,357,138.89 = 305,856.72/x
  3. Step 3: Cross multiply
    904,908.78x = 1,357,138.89 × 305,856.72
  4. Step 4: Simplify right side
    904,908.78x = 415,090,049,479.84
  5. Step 5: Solve for x
    x = 415,090,049,479.84/904,908.78
  6. Step 6: Final answer
    x = 458,709.27

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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.