Home / 780,968.52-1,171,128.30-381,493.32

Finding the Fourth Proportional to 780,968.52, 1,171,128.30 and 381,493.32

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Solution

The fourth proportional to 780,968.52, 1,171,128.30 and 381,493.32 is: 572,081.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,968.52 : 1,171,128.30 = 381,493.32 : x
  2. Step 2: Convert to fraction form
    780,968.52/1,171,128.30 = 381,493.32/x
  3. Step 3: Cross multiply
    780,968.52x = 1,171,128.30 × 381,493.32
  4. Step 4: Simplify right side
    780,968.52x = 446,777,623,312.96
  5. Step 5: Solve for x
    x = 446,777,623,312.96/780,968.52
  6. Step 6: Final answer
    x = 572,081.48

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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.