Home / 1,001,178.72-1,380,519.72-638,027.64

Finding the Fourth Proportional to 1,001,178.72, 1,380,519.72 and 638,027.64

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Solution

The fourth proportional to 1,001,178.72, 1,380,519.72 and 638,027.64 is: 879,772.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,001,178.72 : 1,380,519.72 = 638,027.64 : x
  2. Step 2: Convert to fraction form
    1,001,178.72/1,380,519.72 = 638,027.64/x
  3. Step 3: Cross multiply
    1,001,178.72x = 1,380,519.72 × 638,027.64
  4. Step 4: Simplify right side
    1,001,178.72x = 880,809,738,925.06
  5. Step 5: Solve for x
    x = 880,809,738,925.06/1,001,178.72
  6. Step 6: Final answer
    x = 879,772.73

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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.