Home / 1,131,126.08-1,697,466.80-421,721.60

Finding the Fourth Proportional to 1,131,126.08, 1,697,466.80 and 421,721.60

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Solution

The fourth proportional to 1,131,126.08, 1,697,466.80 and 421,721.60 is: 632,872.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,126.08 : 1,697,466.80 = 421,721.60 : x
  2. Step 2: Convert to fraction form
    1,131,126.08/1,697,466.80 = 421,721.60/x
  3. Step 3: Cross multiply
    1,131,126.08x = 1,697,466.80 × 421,721.60
  4. Step 4: Simplify right side
    1,131,126.08x = 715,858,414,842.88
  5. Step 5: Solve for x
    x = 715,858,414,842.88/1,131,126.08
  6. Step 6: Final answer
    x = 632,872.35

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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.