Home / 920,194.80-1,380,335.40-289,129.20

Finding the Fourth Proportional to 920,194.80, 1,380,335.40 and 289,129.20

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Solution

The fourth proportional to 920,194.80, 1,380,335.40 and 289,129.20 is: 433,707.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,194.80 : 1,380,335.40 = 289,129.20 : x
  2. Step 2: Convert to fraction form
    920,194.80/1,380,335.40 = 289,129.20/x
  3. Step 3: Cross multiply
    920,194.80x = 1,380,335.40 × 289,129.20
  4. Step 4: Simplify right side
    920,194.80x = 399,095,269,933.68
  5. Step 5: Solve for x
    x = 399,095,269,933.68/920,194.80
  6. Step 6: Final answer
    x = 433,707.37

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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.