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Finding the Fourth Proportional to 1,283,290.32, 1,923,852.78 and 808,929.84

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Solution

The fourth proportional to 1,283,290.32, 1,923,852.78 and 808,929.84 is: 1,212,712.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283,290.32 : 1,923,852.78 = 808,929.84 : x
  2. Step 2: Convert to fraction form
    1,283,290.32/1,923,852.78 = 808,929.84/x
  3. Step 3: Cross multiply
    1,283,290.32x = 1,923,852.78 × 808,929.84
  4. Step 4: Simplify right side
    1,283,290.32x = 1,556,261,921,508.96
  5. Step 5: Solve for x
    x = 1,556,261,921,508.96/1,283,290.32
  6. Step 6: Final answer
    x = 1,212,712.27

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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.