Home / 817,914.37-1,227,121.95-418,837.70

Finding the Fourth Proportional to 817,914.37, 1,227,121.95 and 418,837.70

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Solution

The fourth proportional to 817,914.37, 1,227,121.95 and 418,837.70 is: 628,384.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,914.37 : 1,227,121.95 = 418,837.70 : x
  2. Step 2: Convert to fraction form
    817,914.37/1,227,121.95 = 418,837.70/x
  3. Step 3: Cross multiply
    817,914.37x = 1,227,121.95 × 418,837.70
  4. Step 4: Simplify right side
    817,914.37x = 513,964,935,157.52
  5. Step 5: Solve for x
    x = 513,964,935,157.52/817,914.37
  6. Step 6: Final answer
    x = 628,384.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.