Home / 1,687,238.70-2,530,858.05-489,200.10

Finding the Fourth Proportional to 1,687,238.70, 2,530,858.05 and 489,200.10

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Solution

The fourth proportional to 1,687,238.70, 2,530,858.05 and 489,200.10 is: 733,800.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,238.70 : 2,530,858.05 = 489,200.10 : x
  2. Step 2: Convert to fraction form
    1,687,238.70/2,530,858.05 = 489,200.10/x
  3. Step 3: Cross multiply
    1,687,238.70x = 2,530,858.05 × 489,200.10
  4. Step 4: Simplify right side
    1,687,238.70x = 1,238,096,011,145.81
  5. Step 5: Solve for x
    x = 1,238,096,011,145.81/1,687,238.70
  6. Step 6: Final answer
    x = 733,800.15

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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.