Home / 871,817.80-1,203,109.62-489,844.36

Finding the Fourth Proportional to 871,817.80, 1,203,109.62 and 489,844.36

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Solution

The fourth proportional to 871,817.80, 1,203,109.62 and 489,844.36 is: 675,985.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,817.80 : 1,203,109.62 = 489,844.36 : x
  2. Step 2: Convert to fraction form
    871,817.80/1,203,109.62 = 489,844.36/x
  3. Step 3: Cross multiply
    871,817.80x = 1,203,109.62 × 489,844.36
  4. Step 4: Simplify right side
    871,817.80x = 589,336,461,818.74
  5. Step 5: Solve for x
    x = 589,336,461,818.74/871,817.80
  6. Step 6: Final answer
    x = 675,985.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.