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Finding the Fourth Proportional to 626,249, 864,225.78 and 339,770.36

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Solution

The fourth proportional to 626,249, 864,225.78 and 339,770.36 is: 468,884.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,249 : 864,225.78 = 339,770.36 : x
  2. Step 2: Convert to fraction form
    626,249/864,225.78 = 339,770.36/x
  3. Step 3: Cross multiply
    626,249x = 864,225.78 × 339,770.36
  4. Step 4: Simplify right side
    626,249x = 293,638,304,391.88
  5. Step 5: Solve for x
    x = 293,638,304,391.88/626,249
  6. Step 6: Final answer
    x = 468,884.27

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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.