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Finding the Fourth Proportional to 580,321.49, 870,728.28 and 281,025.07

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Solution

The fourth proportional to 580,321.49, 870,728.28 and 281,025.07 is: 421,656.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,321.49 : 870,728.28 = 281,025.07 : x
  2. Step 2: Convert to fraction form
    580,321.49/870,728.28 = 281,025.07/x
  3. Step 3: Cross multiply
    580,321.49x = 870,728.28 × 281,025.07
  4. Step 4: Simplify right side
    580,321.49x = 244,696,473,661.16
  5. Step 5: Solve for x
    x = 244,696,473,661.16/580,321.49
  6. Step 6: Final answer
    x = 421,656.75

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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.