Home / 1,212,815.80-1,819,223.70-858,521.80

Finding the Fourth Proportional to 1,212,815.80, 1,819,223.70 and 858,521.80

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Solution

The fourth proportional to 1,212,815.80, 1,819,223.70 and 858,521.80 is: 1,287,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,815.80 : 1,819,223.70 = 858,521.80 : x
  2. Step 2: Convert to fraction form
    1,212,815.80/1,819,223.70 = 858,521.80/x
  3. Step 3: Cross multiply
    1,212,815.80x = 1,819,223.70 × 858,521.80
  4. Step 4: Simplify right side
    1,212,815.80x = 1,561,843,205,526.66
  5. Step 5: Solve for x
    x = 1,561,843,205,526.66/1,212,815.80
  6. Step 6: Final answer
    x = 1,287,782.70

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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.