Home / 1,555,801.75-2,147,006.42-840,409.75

Finding the Fourth Proportional to 1,555,801.75, 2,147,006.42 and 840,409.75

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Solution

The fourth proportional to 1,555,801.75, 2,147,006.42 and 840,409.75 is: 1,159,765.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,801.75 : 2,147,006.42 = 840,409.75 : x
  2. Step 2: Convert to fraction form
    1,555,801.75/2,147,006.42 = 840,409.75/x
  3. Step 3: Cross multiply
    1,555,801.75x = 2,147,006.42 × 840,409.75
  4. Step 4: Simplify right side
    1,555,801.75x = 1,804,365,128,680.60
  5. Step 5: Solve for x
    x = 1,804,365,128,680.60/1,555,801.75
  6. Step 6: Final answer
    x = 1,159,765.46

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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.