Home / 1,670,618.72-2,505,928.08-408,431.36

Finding the Fourth Proportional to 1,670,618.72, 2,505,928.08 and 408,431.36

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Solution

The fourth proportional to 1,670,618.72, 2,505,928.08 and 408,431.36 is: 612,647.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670,618.72 : 2,505,928.08 = 408,431.36 : x
  2. Step 2: Convert to fraction form
    1,670,618.72/2,505,928.08 = 408,431.36/x
  3. Step 3: Cross multiply
    1,670,618.72x = 2,505,928.08 × 408,431.36
  4. Step 4: Simplify right side
    1,670,618.72x = 1,023,499,613,776.59
  5. Step 5: Solve for x
    x = 1,023,499,613,776.59/1,670,618.72
  6. Step 6: Final answer
    x = 612,647.04

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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.