Home / 821,630.08-1,233,460.01-389,760.45

Finding the Fourth Proportional to 821,630.08, 1,233,460.01 and 389,760.45

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Solution

The fourth proportional to 821,630.08, 1,233,460.01 and 389,760.45 is: 585,122.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,630.08 : 1,233,460.01 = 389,760.45 : x
  2. Step 2: Convert to fraction form
    821,630.08/1,233,460.01 = 389,760.45/x
  3. Step 3: Cross multiply
    821,630.08x = 1,233,460.01 × 389,760.45
  4. Step 4: Simplify right side
    821,630.08x = 480,753,928,554.61
  5. Step 5: Solve for x
    x = 480,753,928,554.61/821,630.08
  6. Step 6: Final answer
    x = 585,122.11

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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.