Home / 1,380,819.76-1,905,146.24-890,581.84

Finding the Fourth Proportional to 1,380,819.76, 1,905,146.24 and 890,581.84

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Solution

The fourth proportional to 1,380,819.76, 1,905,146.24 and 890,581.84 is: 1,228,754.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,819.76 : 1,905,146.24 = 890,581.84 : x
  2. Step 2: Convert to fraction form
    1,380,819.76/1,905,146.24 = 890,581.84/x
  3. Step 3: Cross multiply
    1,380,819.76x = 1,905,146.24 × 890,581.84
  4. Step 4: Simplify right side
    1,380,819.76x = 1,696,688,643,888.28
  5. Step 5: Solve for x
    x = 1,696,688,643,888.28/1,380,819.76
  6. Step 6: Final answer
    x = 1,228,754.61

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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.