Home / 1,515,380.85-2,091,907.55-999,440.82

Finding the Fourth Proportional to 1,515,380.85, 2,091,907.55 and 999,440.82

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Solution

The fourth proportional to 1,515,380.85, 2,091,907.55 and 999,440.82 is: 1,379,678.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515,380.85 : 2,091,907.55 = 999,440.82 : x
  2. Step 2: Convert to fraction form
    1,515,380.85/2,091,907.55 = 999,440.82/x
  3. Step 3: Cross multiply
    1,515,380.85x = 2,091,907.55 × 999,440.82
  4. Step 4: Simplify right side
    1,515,380.85x = 2,090,737,799,634.79
  5. Step 5: Solve for x
    x = 2,090,737,799,634.79/1,515,380.85
  6. Step 6: Final answer
    x = 1,379,678.12

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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.