Home / 1,179,079.39-1,768,992.90-420,904.60

Finding the Fourth Proportional to 1,179,079.39, 1,768,992.90 and 420,904.60

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Solution

The fourth proportional to 1,179,079.39, 1,768,992.90 and 420,904.60 is: 631,490.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179,079.39 : 1,768,992.90 = 420,904.60 : x
  2. Step 2: Convert to fraction form
    1,179,079.39/1,768,992.90 = 420,904.60/x
  3. Step 3: Cross multiply
    1,179,079.39x = 1,768,992.90 × 420,904.60
  4. Step 4: Simplify right side
    1,179,079.39x = 744,577,248,977.34
  5. Step 5: Solve for x
    x = 744,577,248,977.34/1,179,079.39
  6. Step 6: Final answer
    x = 631,490.34

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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.