Home / 1,678,128.96-2,517,147.36-415,928.64

Finding the Fourth Proportional to 1,678,128.96, 2,517,147.36 and 415,928.64

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Solution

The fourth proportional to 1,678,128.96, 2,517,147.36 and 415,928.64 is: 623,881.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,128.96 : 2,517,147.36 = 415,928.64 : x
  2. Step 2: Convert to fraction form
    1,678,128.96/2,517,147.36 = 415,928.64/x
  3. Step 3: Cross multiply
    1,678,128.96x = 2,517,147.36 × 415,928.64
  4. Step 4: Simplify right side
    1,678,128.96x = 1,046,953,678,124.39
  5. Step 5: Solve for x
    x = 1,046,953,678,124.39/1,678,128.96
  6. Step 6: Final answer
    x = 623,881.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.