Home / 784,427.85-1,176,252.89-278,912.82

Finding the Fourth Proportional to 784,427.85, 1,176,252.89 and 278,912.82

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Solution

The fourth proportional to 784,427.85, 1,176,252.89 and 278,912.82 is: 418,230.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,427.85 : 1,176,252.89 = 278,912.82 : x
  2. Step 2: Convert to fraction form
    784,427.85/1,176,252.89 = 278,912.82/x
  3. Step 3: Cross multiply
    784,427.85x = 1,176,252.89 × 278,912.82
  4. Step 4: Simplify right side
    784,427.85x = 328,072,009,188.49
  5. Step 5: Solve for x
    x = 328,072,009,188.49/784,427.85
  6. Step 6: Final answer
    x = 418,230.96

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1.5x scale

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.