Home / 400,859.40-553,185.30-219,579

Finding the Fourth Proportional to 400,859.40, 553,185.30 and 219,579

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Solution

The fourth proportional to 400,859.40, 553,185.30 and 219,579 is: 303,018.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,859.40 : 553,185.30 = 219,579 : x
  2. Step 2: Convert to fraction form
    400,859.40/553,185.30 = 219,579/x
  3. Step 3: Cross multiply
    400,859.40x = 553,185.30 × 219,579
  4. Step 4: Simplify right side
    400,859.40x = 121,467,874,988.70
  5. Step 5: Solve for x
    x = 121,467,874,988.70/400,859.40
  6. Step 6: Final answer
    x = 303,018.65

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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.