Home / 1,440,379.86-1,987,700.90-786,991.88

Finding the Fourth Proportional to 1,440,379.86, 1,987,700.90 and 786,991.88

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Solution

The fourth proportional to 1,440,379.86, 1,987,700.90 and 786,991.88 is: 1,086,036.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,379.86 : 1,987,700.90 = 786,991.88 : x
  2. Step 2: Convert to fraction form
    1,440,379.86/1,987,700.90 = 786,991.88/x
  3. Step 3: Cross multiply
    1,440,379.86x = 1,987,700.90 × 786,991.88
  4. Step 4: Simplify right side
    1,440,379.86x = 1,564,304,454,295.23
  5. Step 5: Solve for x
    x = 1,564,304,454,295.23/1,440,379.86
  6. Step 6: Final answer
    x = 1,086,036.05

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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.