Home / 1,015,995.86-1,521,004.18-678,198.66

Finding the Fourth Proportional to 1,015,995.86, 1,521,004.18 and 678,198.66

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Solution

The fourth proportional to 1,015,995.86, 1,521,004.18 and 678,198.66 is: 1,015,302.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015,995.86 : 1,521,004.18 = 678,198.66 : x
  2. Step 2: Convert to fraction form
    1,015,995.86/1,521,004.18 = 678,198.66/x
  3. Step 3: Cross multiply
    1,015,995.86x = 1,521,004.18 × 678,198.66
  4. Step 4: Simplify right side
    1,015,995.86x = 1,031,542,996,730.40
  5. Step 5: Solve for x
    x = 1,031,542,996,730.40/1,015,995.86
  6. Step 6: Final answer
    x = 1,015,302.36

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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.