Home / 1,320,998.63-1,822,978.10-717,386.63

Finding the Fourth Proportional to 1,320,998.63, 1,822,978.10 and 717,386.63

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Solution

The fourth proportional to 1,320,998.63, 1,822,978.10 and 717,386.63 is: 989,993.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,998.63 : 1,822,978.10 = 717,386.63 : x
  2. Step 2: Convert to fraction form
    1,320,998.63/1,822,978.10 = 717,386.63/x
  3. Step 3: Cross multiply
    1,320,998.63x = 1,822,978.10 × 717,386.63
  4. Step 4: Simplify right side
    1,320,998.63x = 1,307,780,108,401.38
  5. Step 5: Solve for x
    x = 1,307,780,108,401.38/1,320,998.63
  6. Step 6: Final answer
    x = 989,993.54

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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.