Home / 1,239,964.92-1,856,334.21-921,526.78

Finding the Fourth Proportional to 1,239,964.92, 1,856,334.21 and 921,526.78

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Solution

The fourth proportional to 1,239,964.92, 1,856,334.21 and 921,526.78 is: 1,379,604.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,964.92 : 1,856,334.21 = 921,526.78 : x
  2. Step 2: Convert to fraction form
    1,239,964.92/1,856,334.21 = 921,526.78/x
  3. Step 3: Cross multiply
    1,239,964.92x = 1,856,334.21 × 921,526.78
  4. Step 4: Simplify right side
    1,239,964.92x = 1,710,661,682,537.51
  5. Step 5: Solve for x
    x = 1,710,661,682,537.51/1,239,964.92
  6. Step 6: Final answer
    x = 1,379,604.91

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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.