Home / 1,178,605.76-1,768,039.06-420,623.96

Finding the Fourth Proportional to 1,178,605.76, 1,768,039.06 and 420,623.96

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Solution

The fourth proportional to 1,178,605.76, 1,768,039.06 and 420,623.96 is: 630,982.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,605.76 : 1,768,039.06 = 420,623.96 : x
  2. Step 2: Convert to fraction form
    1,178,605.76/1,768,039.06 = 420,623.96/x
  3. Step 3: Cross multiply
    1,178,605.76x = 1,768,039.06 × 420,623.96
  4. Step 4: Simplify right side
    1,178,605.76x = 743,679,590,851.88
  5. Step 5: Solve for x
    x = 743,679,590,851.88/1,178,605.76
  6. Step 6: Final answer
    x = 630,982.48

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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.