Home / 1,211,450.40-1,671,812.61-667,605.71

Finding the Fourth Proportional to 1,211,450.40, 1,671,812.61 and 667,605.71

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Solution

The fourth proportional to 1,211,450.40, 1,671,812.61 and 667,605.71 is: 921,301.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,450.40 : 1,671,812.61 = 667,605.71 : x
  2. Step 2: Convert to fraction form
    1,211,450.40/1,671,812.61 = 667,605.71/x
  3. Step 3: Cross multiply
    1,211,450.40x = 1,671,812.61 × 667,605.71
  4. Step 4: Simplify right side
    1,211,450.40x = 1,116,111,637,795.95
  5. Step 5: Solve for x
    x = 1,116,111,637,795.95/1,211,450.40
  6. Step 6: Final answer
    x = 921,301.97

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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.