Home / 1,328,370.79-1,993,139.40-697,136.98

Finding the Fourth Proportional to 1,328,370.79, 1,993,139.40 and 697,136.98

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Solution

The fourth proportional to 1,328,370.79, 1,993,139.40 and 697,136.98 is: 1,046,011.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,370.79 : 1,993,139.40 = 697,136.98 : x
  2. Step 2: Convert to fraction form
    1,328,370.79/1,993,139.40 = 697,136.98/x
  3. Step 3: Cross multiply
    1,328,370.79x = 1,993,139.40 × 697,136.98
  4. Step 4: Simplify right side
    1,328,370.79x = 1,389,491,182,035.01
  5. Step 5: Solve for x
    x = 1,389,491,182,035.01/1,328,370.79
  6. Step 6: Final answer
    x = 1,046,011.54

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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.