Home / 1,121,158.80-1,682,263.08-489,990.60

Finding the Fourth Proportional to 1,121,158.80, 1,682,263.08 and 489,990.60

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Solution

The fourth proportional to 1,121,158.80, 1,682,263.08 and 489,990.60 is: 735,215.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,158.80 : 1,682,263.08 = 489,990.60 : x
  2. Step 2: Convert to fraction form
    1,121,158.80/1,682,263.08 = 489,990.60/x
  3. Step 3: Cross multiply
    1,121,158.80x = 1,682,263.08 × 489,990.60
  4. Step 4: Simplify right side
    1,121,158.80x = 824,293,095,927.05
  5. Step 5: Solve for x
    x = 824,293,095,927.05/1,121,158.80
  6. Step 6: Final answer
    x = 735,215.29

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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.