Home / 1,309,319.48-1,807,108.91-819,516.12

Finding the Fourth Proportional to 1,309,319.48, 1,807,108.91 and 819,516.12

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Solution

The fourth proportional to 1,309,319.48, 1,807,108.91 and 819,516.12 is: 1,131,087.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,319.48 : 1,807,108.91 = 819,516.12 : x
  2. Step 2: Convert to fraction form
    1,309,319.48/1,807,108.91 = 819,516.12/x
  3. Step 3: Cross multiply
    1,309,319.48x = 1,807,108.91 × 819,516.12
  4. Step 4: Simplify right side
    1,309,319.48x = 1,480,954,878,243.05
  5. Step 5: Solve for x
    x = 1,480,954,878,243.05/1,309,319.48
  6. Step 6: Final answer
    x = 1,131,087.49

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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.