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Finding the Fourth Proportional to 939,706, 1,297,870.68 and 618,850.24

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Solution

The fourth proportional to 939,706, 1,297,870.68 and 618,850.24 is: 854,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,706 : 1,297,870.68 = 618,850.24 : x
  2. Step 2: Convert to fraction form
    939,706/1,297,870.68 = 618,850.24/x
  3. Step 3: Cross multiply
    939,706x = 1,297,870.68 × 618,850.24
  4. Step 4: Simplify right side
    939,706x = 803,187,581,806.96
  5. Step 5: Solve for x
    x = 803,187,581,806.96/939,706
  6. Step 6: Final answer
    x = 854,722.20

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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.