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Finding the Fourth Proportional to 1,173,305.07, 1,756,947.75 and 812,964.03

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Solution

The fourth proportional to 1,173,305.07, 1,756,947.75 and 812,964.03 is: 1,217,360.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173,305.07 : 1,756,947.75 = 812,964.03 : x
  2. Step 2: Convert to fraction form
    1,173,305.07/1,756,947.75 = 812,964.03/x
  3. Step 3: Cross multiply
    1,173,305.07x = 1,756,947.75 × 812,964.03
  4. Step 4: Simplify right side
    1,173,305.07x = 1,428,335,323,339.43
  5. Step 5: Solve for x
    x = 1,428,335,323,339.43/1,173,305.07
  6. Step 6: Final answer
    x = 1,217,360.57

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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.