Home / 1,237,986.82-1,857,145.47-489,857.86

Finding the Fourth Proportional to 1,237,986.82, 1,857,145.47 and 489,857.86

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Solution

The fourth proportional to 1,237,986.82, 1,857,145.47 and 489,857.86 is: 734,852.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237,986.82 : 1,857,145.47 = 489,857.86 : x
  2. Step 2: Convert to fraction form
    1,237,986.82/1,857,145.47 = 489,857.86/x
  3. Step 3: Cross multiply
    1,237,986.82x = 1,857,145.47 × 489,857.86
  4. Step 4: Simplify right side
    1,237,986.82x = 909,737,305,642.89
  5. Step 5: Solve for x
    x = 909,737,305,642.89/1,237,986.82
  6. Step 6: Final answer
    x = 734,852.17

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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.