Home / 1,420,840.80-2,131,520.40-579,477.60

Finding the Fourth Proportional to 1,420,840.80, 2,131,520.40 and 579,477.60

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Solution

The fourth proportional to 1,420,840.80, 2,131,520.40 and 579,477.60 is: 869,322.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,840.80 : 2,131,520.40 = 579,477.60 : x
  2. Step 2: Convert to fraction form
    1,420,840.80/2,131,520.40 = 579,477.60/x
  3. Step 3: Cross multiply
    1,420,840.80x = 2,131,520.40 × 579,477.60
  4. Step 4: Simplify right side
    1,420,840.80x = 1,235,168,325,743.04
  5. Step 5: Solve for x
    x = 1,235,168,325,743.04/1,420,840.80
  6. Step 6: Final answer
    x = 869,322.11

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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.