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Finding the Fourth Proportional to 1,260,489.72, 1,739,610.57 and 770,746.27

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Solution

The fourth proportional to 1,260,489.72, 1,739,610.57 and 770,746.27 is: 1,063,712.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,489.72 : 1,739,610.57 = 770,746.27 : x
  2. Step 2: Convert to fraction form
    1,260,489.72/1,739,610.57 = 770,746.27/x
  3. Step 3: Cross multiply
    1,260,489.72x = 1,739,610.57 × 770,746.27
  4. Step 4: Simplify right side
    1,260,489.72x = 1,340,798,358,080.07
  5. Step 5: Solve for x
    x = 1,340,798,358,080.07/1,260,489.72
  6. Step 6: Final answer
    x = 1,063,712.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.