Home / 826,187.84-1,239,340.96-345,932.40

Finding the Fourth Proportional to 826,187.84, 1,239,340.96 and 345,932.40

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Solution

The fourth proportional to 826,187.84, 1,239,340.96 and 345,932.40 is: 518,923.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,187.84 : 1,239,340.96 = 345,932.40 : x
  2. Step 2: Convert to fraction form
    826,187.84/1,239,340.96 = 345,932.40/x
  3. Step 3: Cross multiply
    826,187.84x = 1,239,340.96 × 345,932.40
  4. Step 4: Simplify right side
    826,187.84x = 428,728,192,711.10
  5. Step 5: Solve for x
    x = 428,728,192,711.10/826,187.84
  6. Step 6: Final answer
    x = 518,923.39

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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.