Home / 756,912.20-1,133,813.10-520,521.80

Finding the Fourth Proportional to 756,912.20, 1,133,813.10 and 520,521.80

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Solution

The fourth proportional to 756,912.20, 1,133,813.10 and 520,521.80 is: 779,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,912.20 : 1,133,813.10 = 520,521.80 : x
  2. Step 2: Convert to fraction form
    756,912.20/1,133,813.10 = 520,521.80/x
  3. Step 3: Cross multiply
    756,912.20x = 1,133,813.10 × 520,521.80
  4. Step 4: Simplify right side
    756,912.20x = 590,174,435,675.58
  5. Step 5: Solve for x
    x = 590,174,435,675.58/756,912.20
  6. Step 6: Final answer
    x = 779,713.20

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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.