Home / 1,673,905.20-2,309,961.92-909,978

Finding the Fourth Proportional to 1,673,905.20, 2,309,961.92 and 909,978

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Solution

The fourth proportional to 1,673,905.20, 2,309,961.92 and 909,978 is: 1,255,754.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,673,905.20 : 2,309,961.92 = 909,978 : x
  2. Step 2: Convert to fraction form
    1,673,905.20/2,309,961.92 = 909,978/x
  3. Step 3: Cross multiply
    1,673,905.20x = 2,309,961.92 × 909,978
  4. Step 4: Simplify right side
    1,673,905.20x = 2,102,014,528,037.76
  5. Step 5: Solve for x
    x = 2,102,014,528,037.76/1,673,905.20
  6. Step 6: Final answer
    x = 1,255,754.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.