Home / 1,276,643.56-1,914,961.84-378,155.35

Finding the Fourth Proportional to 1,276,643.56, 1,914,961.84 and 378,155.35

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Solution

The fourth proportional to 1,276,643.56, 1,914,961.84 and 378,155.35 is: 567,231.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,643.56 : 1,914,961.84 = 378,155.35 : x
  2. Step 2: Convert to fraction form
    1,276,643.56/1,914,961.84 = 378,155.35/x
  3. Step 3: Cross multiply
    1,276,643.56x = 1,914,961.84 × 378,155.35
  4. Step 4: Simplify right side
    1,276,643.56x = 724,153,059,806.77
  5. Step 5: Solve for x
    x = 724,153,059,806.77/1,276,643.56
  6. Step 6: Final answer
    x = 567,231.99

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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.