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Finding the Fourth Proportional to 626,325.21, 864,324.88 and 339,839.15

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Solution

The fourth proportional to 626,325.21, 864,324.88 and 339,839.15 is: 468,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,325.21 : 864,324.88 = 339,839.15 : x
  2. Step 2: Convert to fraction form
    626,325.21/864,324.88 = 339,839.15/x
  3. Step 3: Cross multiply
    626,325.21x = 864,324.88 × 339,839.15
  4. Step 4: Simplify right side
    626,325.21x = 293,731,427,371.83
  5. Step 5: Solve for x
    x = 293,731,427,371.83/626,325.21
  6. Step 6: Final answer
    x = 468,975.90

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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.