Home / 743,161.56-1,025,587.17-420,864.72

Finding the Fourth Proportional to 743,161.56, 1,025,587.17 and 420,864.72

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Solution

The fourth proportional to 743,161.56, 1,025,587.17 and 420,864.72 is: 580,807.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,161.56 : 1,025,587.17 = 420,864.72 : x
  2. Step 2: Convert to fraction form
    743,161.56/1,025,587.17 = 420,864.72/x
  3. Step 3: Cross multiply
    743,161.56x = 1,025,587.17 × 420,864.72
  4. Step 4: Simplify right side
    743,161.56x = 431,633,457,137.64
  5. Step 5: Solve for x
    x = 431,633,457,137.64/743,161.56
  6. Step 6: Final answer
    x = 580,807.03

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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.