Home / 1,240,858.73-1,712,119.42-724,378.21

Finding the Fourth Proportional to 1,240,858.73, 1,712,119.42 and 724,378.21

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Solution

The fourth proportional to 1,240,858.73, 1,712,119.42 and 724,378.21 is: 999,486.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,858.73 : 1,712,119.42 = 724,378.21 : x
  2. Step 2: Convert to fraction form
    1,240,858.73/1,712,119.42 = 724,378.21/x
  3. Step 3: Cross multiply
    1,240,858.73x = 1,712,119.42 × 724,378.21
  4. Step 4: Simplify right side
    1,240,858.73x = 1,240,222,000,765.84
  5. Step 5: Solve for x
    x = 1,240,222,000,765.84/1,240,858.73
  6. Step 6: Final answer
    x = 999,486.86

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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.