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Finding the Fourth Proportional to 660,564.48, 990,593.16 and 281,244.72

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Solution

The fourth proportional to 660,564.48, 990,593.16 and 281,244.72 is: 421,759.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,564.48 : 990,593.16 = 281,244.72 : x
  2. Step 2: Convert to fraction form
    660,564.48/990,593.16 = 281,244.72/x
  3. Step 3: Cross multiply
    660,564.48x = 990,593.16 × 281,244.72
  4. Step 4: Simplify right side
    660,564.48x = 278,599,095,918.12
  5. Step 5: Solve for x
    x = 278,599,095,918.12/660,564.48
  6. Step 6: Final answer
    x = 421,759.12

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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.