Home / 1,515,381.85-2,091,908.93-999,441.82

Finding the Fourth Proportional to 1,515,381.85, 2,091,908.93 and 999,441.82

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Solution

The fourth proportional to 1,515,381.85, 2,091,908.93 and 999,441.82 is: 1,379,679.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,381.85 : 2,091,908.93 = 999,441.82 : x
  2. Step 2: Convert to fraction form
    1,515,381.85/2,091,908.93 = 999,441.82/x
  3. Step 3: Cross multiply
    1,515,381.85x = 2,091,908.93 × 999,441.82
  4. Step 4: Simplify right side
    1,515,381.85x = 2,090,741,268,273.45
  5. Step 5: Solve for x
    x = 2,090,741,268,273.45/1,515,381.85
  6. Step 6: Final answer
    x = 1,379,679.50

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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.