Home / 677,642.86-1,016,137.32-393,404.98

Finding the Fourth Proportional to 677,642.86, 1,016,137.32 and 393,404.98

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Solution

The fourth proportional to 677,642.86, 1,016,137.32 and 393,404.98 is: 589,917.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,642.86 : 1,016,137.32 = 393,404.98 : x
  2. Step 2: Convert to fraction form
    677,642.86/1,016,137.32 = 393,404.98/x
  3. Step 3: Cross multiply
    677,642.86x = 1,016,137.32 × 393,404.98
  4. Step 4: Simplify right side
    677,642.86x = 399,753,482,051.85
  5. Step 5: Solve for x
    x = 399,753,482,051.85/677,642.86
  6. Step 6: Final answer
    x = 589,917.65

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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.