Home / 1,187,099.35-1,638,100.06-670,897.49

Finding the Fourth Proportional to 1,187,099.35, 1,638,100.06 and 670,897.49

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Solution

The fourth proportional to 1,187,099.35, 1,638,100.06 and 670,897.49 is: 925,783.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,099.35 : 1,638,100.06 = 670,897.49 : x
  2. Step 2: Convert to fraction form
    1,187,099.35/1,638,100.06 = 670,897.49/x
  3. Step 3: Cross multiply
    1,187,099.35x = 1,638,100.06 × 670,897.49
  4. Step 4: Simplify right side
    1,187,099.35x = 1,098,997,208,755.11
  5. Step 5: Solve for x
    x = 1,098,997,208,755.11/1,187,099.35
  6. Step 6: Final answer
    x = 925,783.69

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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.