Home / 999,143.67-1,378,817.29-540,257.14

Finding the Fourth Proportional to 999,143.67, 1,378,817.29 and 540,257.14

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Solution

The fourth proportional to 999,143.67, 1,378,817.29 and 540,257.14 is: 745,554.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,143.67 : 1,378,817.29 = 540,257.14 : x
  2. Step 2: Convert to fraction form
    999,143.67/1,378,817.29 = 540,257.14/x
  3. Step 3: Cross multiply
    999,143.67x = 1,378,817.29 × 540,257.14
  4. Step 4: Simplify right side
    999,143.67x = 744,915,884,111.87
  5. Step 5: Solve for x
    x = 744,915,884,111.87/999,143.67
  6. Step 6: Final answer
    x = 745,554.33

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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.