Home / 1,289,015.82-1,933,622.14-390,531.98

Finding the Fourth Proportional to 1,289,015.82, 1,933,622.14 and 390,531.98

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Solution

The fourth proportional to 1,289,015.82, 1,933,622.14 and 390,531.98 is: 585,827.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,015.82 : 1,933,622.14 = 390,531.98 : x
  2. Step 2: Convert to fraction form
    1,289,015.82/1,933,622.14 = 390,531.98/x
  3. Step 3: Cross multiply
    1,289,015.82x = 1,933,622.14 × 390,531.98
  4. Step 4: Simplify right side
    1,289,015.82x = 755,141,272,261.60
  5. Step 5: Solve for x
    x = 755,141,272,261.60/1,289,015.82
  6. Step 6: Final answer
    x = 585,827.78

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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.