Home / 1,505,076.93-2,078,731.72-991,129.20

Finding the Fourth Proportional to 1,505,076.93, 2,078,731.72 and 991,129.20

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Solution

The fourth proportional to 1,505,076.93, 2,078,731.72 and 991,129.20 is: 1,368,894.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505,076.93 : 2,078,731.72 = 991,129.20 : x
  2. Step 2: Convert to fraction form
    1,505,076.93/2,078,731.72 = 991,129.20/x
  3. Step 3: Cross multiply
    1,505,076.93x = 2,078,731.72 × 991,129.20
  4. Step 4: Simplify right side
    1,505,076.93x = 2,060,291,706,658.22
  5. Step 5: Solve for x
    x = 2,060,291,706,658.22/1,505,076.93
  6. Step 6: Final answer
    x = 1,368,894.62

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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.