Home / 694,521.90-1,040,144.45-429,101.10

Finding the Fourth Proportional to 694,521.90, 1,040,144.45 and 429,101.10

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Solution

The fourth proportional to 694,521.90, 1,040,144.45 and 429,101.10 is: 642,639.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,521.90 : 1,040,144.45 = 429,101.10 : x
  2. Step 2: Convert to fraction form
    694,521.90/1,040,144.45 = 429,101.10/x
  3. Step 3: Cross multiply
    694,521.90x = 1,040,144.45 × 429,101.10
  4. Step 4: Simplify right side
    694,521.90x = 446,327,127,653.90
  5. Step 5: Solve for x
    x = 446,327,127,653.90/694,521.90
  6. Step 6: Final answer
    x = 642,639.39

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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.