Home / 820,622.22-1,230,920.57-421,032.42

Finding the Fourth Proportional to 820,622.22, 1,230,920.57 and 421,032.42

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Solution

The fourth proportional to 820,622.22, 1,230,920.57 and 421,032.42 is: 631,542.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,622.22 : 1,230,920.57 = 421,032.42 : x
  2. Step 2: Convert to fraction form
    820,622.22/1,230,920.57 = 421,032.42/x
  3. Step 3: Cross multiply
    820,622.22x = 1,230,920.57 × 421,032.42
  4. Step 4: Simplify right side
    820,622.22x = 518,257,464,309.72
  5. Step 5: Solve for x
    x = 518,257,464,309.72/820,622.22
  6. Step 6: Final answer
    x = 631,542.08

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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.