Home / 1,187,958.53-1,781,150.62-429,700.20

Finding the Fourth Proportional to 1,187,958.53, 1,781,150.62 and 429,700.20

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Solution

The fourth proportional to 1,187,958.53, 1,781,150.62 and 429,700.20 is: 644,265.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,958.53 : 1,781,150.62 = 429,700.20 : x
  2. Step 2: Convert to fraction form
    1,187,958.53/1,781,150.62 = 429,700.20/x
  3. Step 3: Cross multiply
    1,187,958.53x = 1,781,150.62 × 429,700.20
  4. Step 4: Simplify right side
    1,187,958.53x = 765,360,777,644.12
  5. Step 5: Solve for x
    x = 765,360,777,644.12/1,187,958.53
  6. Step 6: Final answer
    x = 644,265.57

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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.