Home / 742,639.88-1,112,961.99-405,174.83

Finding the Fourth Proportional to 742,639.88, 1,112,961.99 and 405,174.83

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Solution

The fourth proportional to 742,639.88, 1,112,961.99 and 405,174.83 is: 607,217.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,639.88 : 1,112,961.99 = 405,174.83 : x
  2. Step 2: Convert to fraction form
    742,639.88/1,112,961.99 = 405,174.83/x
  3. Step 3: Cross multiply
    742,639.88x = 1,112,961.99 × 405,174.83
  4. Step 4: Simplify right side
    742,639.88x = 450,944,185,094.71
  5. Step 5: Solve for x
    x = 450,944,185,094.71/742,639.88
  6. Step 6: Final answer
    x = 607,217.84

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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.