Home / 1,125,500.25-1,687,215.84-405,665.81

Finding the Fourth Proportional to 1,125,500.25, 1,687,215.84 and 405,665.81

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Solution

The fourth proportional to 1,125,500.25, 1,687,215.84 and 405,665.81 is: 608,125.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,500.25 : 1,687,215.84 = 405,665.81 : x
  2. Step 2: Convert to fraction form
    1,125,500.25/1,687,215.84 = 405,665.81/x
  3. Step 3: Cross multiply
    1,125,500.25x = 1,687,215.84 × 405,665.81
  4. Step 4: Simplify right side
    1,125,500.25x = 684,445,780,378.43
  5. Step 5: Solve for x
    x = 684,445,780,378.43/1,125,500.25
  6. Step 6: Final answer
    x = 608,125.84

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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.