Home / 1,218,138.58-1,680,644.79-708,742.54

Finding the Fourth Proportional to 1,218,138.58, 1,680,644.79 and 708,742.54

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Solution

The fourth proportional to 1,218,138.58, 1,680,644.79 and 708,742.54 is: 977,839.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,138.58 : 1,680,644.79 = 708,742.54 : x
  2. Step 2: Convert to fraction form
    1,218,138.58/1,680,644.79 = 708,742.54/x
  3. Step 3: Cross multiply
    1,218,138.58x = 1,680,644.79 × 708,742.54
  4. Step 4: Simplify right side
    1,218,138.58x = 1,191,144,457,302.37
  5. Step 5: Solve for x
    x = 1,191,144,457,302.37/1,218,138.58
  6. Step 6: Final answer
    x = 977,839.86

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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.