Home / 1,284,161.55-1,772,142.21-711,201.18

Finding the Fourth Proportional to 1,284,161.55, 1,772,142.21 and 711,201.18

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Solution

The fourth proportional to 1,284,161.55, 1,772,142.21 and 711,201.18 is: 981,457.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,161.55 : 1,772,142.21 = 711,201.18 : x
  2. Step 2: Convert to fraction form
    1,284,161.55/1,772,142.21 = 711,201.18/x
  3. Step 3: Cross multiply
    1,284,161.55x = 1,772,142.21 × 711,201.18
  4. Step 4: Simplify right side
    1,284,161.55x = 1,260,349,630,879.81
  5. Step 5: Solve for x
    x = 1,260,349,630,879.81/1,284,161.55
  6. Step 6: Final answer
    x = 981,457.22

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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.