Home / 405,122.46-607,670.61-120,815.36

Finding the Fourth Proportional to 405,122.46, 607,670.61 and 120,815.36

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Solution

The fourth proportional to 405,122.46, 607,670.61 and 120,815.36 is: 181,219.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,122.46 : 607,670.61 = 120,815.36 : x
  2. Step 2: Convert to fraction form
    405,122.46/607,670.61 = 120,815.36/x
  3. Step 3: Cross multiply
    405,122.46x = 607,670.61 × 120,815.36
  4. Step 4: Simplify right side
    405,122.46x = 73,415,943,508.57
  5. Step 5: Solve for x
    x = 73,415,943,508.57/405,122.46
  6. Step 6: Final answer
    x = 181,219.14

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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.