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Finding the Fourth Proportional to 1,263,664.72, 1,743,854.80 and 719,800.32

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Solution

The fourth proportional to 1,263,664.72, 1,743,854.80 and 719,800.32 is: 993,323.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,664.72 : 1,743,854.80 = 719,800.32 : x
  2. Step 2: Convert to fraction form
    1,263,664.72/1,743,854.80 = 719,800.32/x
  3. Step 3: Cross multiply
    1,263,664.72x = 1,743,854.80 × 719,800.32
  4. Step 4: Simplify right side
    1,263,664.72x = 1,255,227,243,073.54
  5. Step 5: Solve for x
    x = 1,255,227,243,073.54/1,263,664.72
  6. Step 6: Final answer
    x = 993,323.01

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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.