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Finding the Fourth Proportional to 727,661.22, 1,091,643.03 and 306,940.74

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Solution

The fourth proportional to 727,661.22, 1,091,643.03 and 306,940.74 is: 460,474.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,661.22 : 1,091,643.03 = 306,940.74 : x
  2. Step 2: Convert to fraction form
    727,661.22/1,091,643.03 = 306,940.74/x
  3. Step 3: Cross multiply
    727,661.22x = 1,091,643.03 × 306,940.74
  4. Step 4: Simplify right side
    727,661.22x = 335,069,719,444.04
  5. Step 5: Solve for x
    x = 335,069,719,444.04/727,661.22
  6. Step 6: Final answer
    x = 460,474.89

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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.