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Finding the Fourth Proportional to 626,265.81, 939,568.14 and 446,578.20

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Solution

The fourth proportional to 626,265.81, 939,568.14 and 446,578.20 is: 669,988.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,265.81 : 939,568.14 = 446,578.20 : x
  2. Step 2: Convert to fraction form
    626,265.81/939,568.14 = 446,578.20/x
  3. Step 3: Cross multiply
    626,265.81x = 939,568.14 × 446,578.20
  4. Step 4: Simplify right side
    626,265.81x = 419,590,648,738.55
  5. Step 5: Solve for x
    x = 419,590,648,738.55/626,265.81
  6. Step 6: Final answer
    x = 669,988.11

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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.