Home / 626,401.47-864,434.03-339,921.56

Finding the Fourth Proportional to 626,401.47, 864,434.03 and 339,921.56

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Solution

The fourth proportional to 626,401.47, 864,434.03 and 339,921.56 is: 469,091.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,401.47 : 864,434.03 = 339,921.56 : x
  2. Step 2: Convert to fraction form
    626,401.47/864,434.03 = 339,921.56/x
  3. Step 3: Cross multiply
    626,401.47x = 864,434.03 × 339,921.56
  4. Step 4: Simplify right side
    626,401.47x = 293,839,757,972.91
  5. Step 5: Solve for x
    x = 293,839,757,972.91/626,401.47
  6. Step 6: Final answer
    x = 469,091.75

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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.