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Finding the Fourth Proportional to 1,491,834.51, 2,058,731.84 and 812,771.01

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Solution

The fourth proportional to 1,491,834.51, 2,058,731.84 and 812,771.01 is: 1,121,624.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491,834.51 : 2,058,731.84 = 812,771.01 : x
  2. Step 2: Convert to fraction form
    1,491,834.51/2,058,731.84 = 812,771.01/x
  3. Step 3: Cross multiply
    1,491,834.51x = 2,058,731.84 × 812,771.01
  4. Step 4: Simplify right side
    1,491,834.51x = 1,673,277,558,947.89
  5. Step 5: Solve for x
    x = 1,673,277,558,947.89/1,491,834.51
  6. Step 6: Final answer
    x = 1,121,624.11

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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.