Home / 999,657.98-1,378,967.19-612,660.86

Finding the Fourth Proportional to 999,657.98, 1,378,967.19 and 612,660.86

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Solution

The fourth proportional to 999,657.98, 1,378,967.19 and 612,660.86 is: 845,128.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,657.98 : 1,378,967.19 = 612,660.86 : x
  2. Step 2: Convert to fraction form
    999,657.98/1,378,967.19 = 612,660.86/x
  3. Step 3: Cross multiply
    999,657.98x = 1,378,967.19 × 612,660.86
  4. Step 4: Simplify right side
    999,657.98x = 844,839,224,537.18
  5. Step 5: Solve for x
    x = 844,839,224,537.18/999,657.98
  6. Step 6: Final answer
    x = 845,128.28

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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.