Home / 769,428.90-1,061,866.85-425,257.42

Finding the Fourth Proportional to 769,428.90, 1,061,866.85 and 425,257.42

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Solution

The fourth proportional to 769,428.90, 1,061,866.85 and 425,257.42 is: 586,885.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,428.90 : 1,061,866.85 = 425,257.42 : x
  2. Step 2: Convert to fraction form
    769,428.90/1,061,866.85 = 425,257.42/x
  3. Step 3: Cross multiply
    769,428.90x = 1,061,866.85 × 425,257.42
  4. Step 4: Simplify right side
    769,428.90x = 451,566,757,014.53
  5. Step 5: Solve for x
    x = 451,566,757,014.53/769,428.90
  6. Step 6: Final answer
    x = 586,885.62

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1.5x scale

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.