Home / 1,211,484.39-1,671,921.50-667,618.71

Finding the Fourth Proportional to 1,211,484.39, 1,671,921.50 and 667,618.71

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Solution

The fourth proportional to 1,211,484.39, 1,671,921.50 and 667,618.71 is: 921,354.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,484.39 : 1,671,921.50 = 667,618.71 : x
  2. Step 2: Convert to fraction form
    1,211,484.39/1,671,921.50 = 667,618.71/x
  3. Step 3: Cross multiply
    1,211,484.39x = 1,671,921.50 × 667,618.71
  4. Step 4: Simplify right side
    1,211,484.39x = 1,116,206,071,713.17
  5. Step 5: Solve for x
    x = 1,116,206,071,713.17/1,211,484.39
  6. Step 6: Final answer
    x = 921,354.07

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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.