Home / 1,111,291.78-1,666,937.67-738,043.78

Finding the Fourth Proportional to 1,111,291.78, 1,666,937.67 and 738,043.78

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Solution

The fourth proportional to 1,111,291.78, 1,666,937.67 and 738,043.78 is: 1,107,065.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,291.78 : 1,666,937.67 = 738,043.78 : x
  2. Step 2: Convert to fraction form
    1,111,291.78/1,666,937.67 = 738,043.78/x
  3. Step 3: Cross multiply
    1,111,291.78x = 1,666,937.67 × 738,043.78
  4. Step 4: Simplify right side
    1,111,291.78x = 1,230,272,978,991.19
  5. Step 5: Solve for x
    x = 1,230,272,978,991.19/1,111,291.78
  6. Step 6: Final answer
    x = 1,107,065.67

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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.