Home / 1,380,551.27-2,071,140.60-421,092.67

Finding the Fourth Proportional to 1,380,551.27, 2,071,140.60 and 421,092.67

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Solution

The fourth proportional to 1,380,551.27, 2,071,140.60 and 421,092.67 is: 631,734.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,551.27 : 2,071,140.60 = 421,092.67 : x
  2. Step 2: Convert to fraction form
    1,380,551.27/2,071,140.60 = 421,092.67/x
  3. Step 3: Cross multiply
    1,380,551.27x = 2,071,140.60 × 421,092.67
  4. Step 4: Simplify right side
    1,380,551.27x = 872,142,122,251.31
  5. Step 5: Solve for x
    x = 872,142,122,251.31/1,380,551.27
  6. Step 6: Final answer
    x = 631,734.69

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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.