Home / 1,327,840.72-1,990,740.12-687,457.96

Finding the Fourth Proportional to 1,327,840.72, 1,990,740.12 and 687,457.96

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Solution

The fourth proportional to 1,327,840.72, 1,990,740.12 and 687,457.96 is: 1,030,658.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,840.72 : 1,990,740.12 = 687,457.96 : x
  2. Step 2: Convert to fraction form
    1,327,840.72/1,990,740.12 = 687,457.96/x
  3. Step 3: Cross multiply
    1,327,840.72x = 1,990,740.12 × 687,457.96
  4. Step 4: Simplify right side
    1,327,840.72x = 1,368,550,141,785.36
  5. Step 5: Solve for x
    x = 1,368,550,141,785.36/1,327,840.72
  6. Step 6: Final answer
    x = 1,030,658.36

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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.