Home / 1,391,161.50-1,919,802.87-787,549.50

Finding the Fourth Proportional to 1,391,161.50, 1,919,802.87 and 787,549.50

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Solution

The fourth proportional to 1,391,161.50, 1,919,802.87 and 787,549.50 is: 1,086,818.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,161.50 : 1,919,802.87 = 787,549.50 : x
  2. Step 2: Convert to fraction form
    1,391,161.50/1,919,802.87 = 787,549.50/x
  3. Step 3: Cross multiply
    1,391,161.50x = 1,919,802.87 × 787,549.50
  4. Step 4: Simplify right side
    1,391,161.50x = 1,511,939,790,367.07
  5. Step 5: Solve for x
    x = 1,511,939,790,367.07/1,391,161.50
  6. Step 6: Final answer
    x = 1,086,818.31

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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.