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Finding the Fourth Proportional to 1,299,686.07, 1,949,534.51 and 853,231.89

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Solution

The fourth proportional to 1,299,686.07, 1,949,534.51 and 853,231.89 is: 1,279,851.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299,686.07 : 1,949,534.51 = 853,231.89 : x
  2. Step 2: Convert to fraction form
    1,299,686.07/1,949,534.51 = 853,231.89/x
  3. Step 3: Cross multiply
    1,299,686.07x = 1,949,534.51 × 853,231.89
  4. Step 4: Simplify right side
    1,299,686.07x = 1,663,405,010,321.36
  5. Step 5: Solve for x
    x = 1,663,405,010,321.36/1,299,686.07
  6. Step 6: Final answer
    x = 1,279,851.38

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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.