Home / 1,255,490.80-1,880,125.80-805,519.60

Finding the Fourth Proportional to 1,255,490.80, 1,880,125.80 and 805,519.60

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Solution

The fourth proportional to 1,255,490.80, 1,880,125.80 and 805,519.60 is: 1,206,283.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,255,490.80 : 1,880,125.80 = 805,519.60 : x
  2. Step 2: Convert to fraction form
    1,255,490.80/1,880,125.80 = 805,519.60/x
  3. Step 3: Cross multiply
    1,255,490.80x = 1,880,125.80 × 805,519.60
  4. Step 4: Simplify right side
    1,255,490.80x = 1,514,478,182,365.68
  5. Step 5: Solve for x
    x = 1,514,478,182,365.68/1,255,490.80
  6. Step 6: Final answer
    x = 1,206,283.78

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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.