Home / 1,277,999.40-1,916,999.10-379,579.80

Finding the Fourth Proportional to 1,277,999.40, 1,916,999.10 and 379,579.80

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Solution

The fourth proportional to 1,277,999.40, 1,916,999.10 and 379,579.80 is: 569,369.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,999.40 : 1,916,999.10 = 379,579.80 : x
  2. Step 2: Convert to fraction form
    1,277,999.40/1,916,999.10 = 379,579.80/x
  3. Step 3: Cross multiply
    1,277,999.40x = 1,916,999.10 × 379,579.80
  4. Step 4: Simplify right side
    1,277,999.40x = 727,654,134,978.18
  5. Step 5: Solve for x
    x = 727,654,134,978.18/1,277,999.40
  6. Step 6: Final answer
    x = 569,369.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.