Home / 859,409.67-1,289,013.78-290,789.07

Finding the Fourth Proportional to 859,409.67, 1,289,013.78 and 290,789.07

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Solution

The fourth proportional to 859,409.67, 1,289,013.78 and 290,789.07 is: 436,149.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,409.67 : 1,289,013.78 = 290,789.07 : x
  2. Step 2: Convert to fraction form
    859,409.67/1,289,013.78 = 290,789.07/x
  3. Step 3: Cross multiply
    859,409.67x = 1,289,013.78 × 290,789.07
  4. Step 4: Simplify right side
    859,409.67x = 374,831,123,476.96
  5. Step 5: Solve for x
    x = 374,831,123,476.96/859,409.67
  6. Step 6: Final answer
    x = 436,149.53

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1.5x scale

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.