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Finding the Fourth Proportional to 1,320,010.02, 1,821,614.57 and 716,398.02

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Solution

The fourth proportional to 1,320,010.02, 1,821,614.57 and 716,398.02 is: 988,629.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,010.02 : 1,821,614.57 = 716,398.02 : x
  2. Step 2: Convert to fraction form
    1,320,010.02/1,821,614.57 = 716,398.02/x
  3. Step 3: Cross multiply
    1,320,010.02x = 1,821,614.57 × 716,398.02
  4. Step 4: Simplify right side
    1,320,010.02x = 1,305,001,070,255.65
  5. Step 5: Solve for x
    x = 1,305,001,070,255.65/1,320,010.02
  6. Step 6: Final answer
    x = 988,629.67

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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.