Home / 1,238,028.57-1,857,208.10-489,899.61

Finding the Fourth Proportional to 1,238,028.57, 1,857,208.10 and 489,899.61

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Solution

The fourth proportional to 1,238,028.57, 1,857,208.10 and 489,899.61 is: 734,914.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,028.57 : 1,857,208.10 = 489,899.61 : x
  2. Step 2: Convert to fraction form
    1,238,028.57/1,857,208.10 = 489,899.61/x
  3. Step 3: Cross multiply
    1,238,028.57x = 1,857,208.10 × 489,899.61
  4. Step 4: Simplify right side
    1,238,028.57x = 909,845,521,429.34
  5. Step 5: Solve for x
    x = 909,845,521,429.34/1,238,028.57
  6. Step 6: Final answer
    x = 734,914.80

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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.