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Finding the Fourth Proportional to 708,065.44, 978,085.20 and 657,676.96

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Solution

The fourth proportional to 708,065.44, 978,085.20 and 657,676.96 is: 908,481.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,065.44 : 978,085.20 = 657,676.96 : x
  2. Step 2: Convert to fraction form
    708,065.44/978,085.20 = 657,676.96/x
  3. Step 3: Cross multiply
    708,065.44x = 978,085.20 × 657,676.96
  4. Step 4: Simplify right side
    708,065.44x = 643,264,100,956.99
  5. Step 5: Solve for x
    x = 643,264,100,956.99/708,065.44
  6. Step 6: Final answer
    x = 908,481.14

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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.