Home / 1,198,639.67-1,654,173.02-689,342.45

Finding the Fourth Proportional to 1,198,639.67, 1,654,173.02 and 689,342.45

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Solution

The fourth proportional to 1,198,639.67, 1,654,173.02 and 689,342.45 is: 951,321.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198,639.67 : 1,654,173.02 = 689,342.45 : x
  2. Step 2: Convert to fraction form
    1,198,639.67/1,654,173.02 = 689,342.45/x
  3. Step 3: Cross multiply
    1,198,639.67x = 1,654,173.02 × 689,342.45
  4. Step 4: Simplify right side
    1,198,639.67x = 1,140,291,675,783.19
  5. Step 5: Solve for x
    x = 1,140,291,675,783.19/1,198,639.67
  6. Step 6: Final answer
    x = 951,321.49

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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.