Home / 785,261.39-1,177,826.40-311,819.63

Finding the Fourth Proportional to 785,261.39, 1,177,826.40 and 311,819.63

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Solution

The fourth proportional to 785,261.39, 1,177,826.40 and 311,819.63 is: 467,703.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,261.39 : 1,177,826.40 = 311,819.63 : x
  2. Step 2: Convert to fraction form
    785,261.39/1,177,826.40 = 311,819.63/x
  3. Step 3: Cross multiply
    785,261.39x = 1,177,826.40 × 311,819.63
  4. Step 4: Simplify right side
    785,261.39x = 367,269,386,363.10
  5. Step 5: Solve for x
    x = 367,269,386,363.10/785,261.39
  6. Step 6: Final answer
    x = 467,703.36

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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.