Home / 625,983.12-863,857.78-339,503.45

Finding the Fourth Proportional to 625,983.12, 863,857.78 and 339,503.45

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Solution

The fourth proportional to 625,983.12, 863,857.78 and 339,503.45 is: 468,515.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,983.12 : 863,857.78 = 339,503.45 : x
  2. Step 2: Convert to fraction form
    625,983.12/863,857.78 = 339,503.45/x
  3. Step 3: Cross multiply
    625,983.12x = 863,857.78 × 339,503.45
  4. Step 4: Simplify right side
    625,983.12x = 293,282,691,451.29
  5. Step 5: Solve for x
    x = 293,282,691,451.29/625,983.12
  6. Step 6: Final answer
    x = 468,515.34

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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.