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Finding the Fourth Proportional to 660,572.48, 990,605.16 and 281,252.72

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Solution

The fourth proportional to 660,572.48, 990,605.16 and 281,252.72 is: 421,771.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,572.48 : 990,605.16 = 281,252.72 : x
  2. Step 2: Convert to fraction form
    660,572.48/990,605.16 = 281,252.72/x
  3. Step 3: Cross multiply
    660,572.48x = 990,605.16 × 281,252.72
  4. Step 4: Simplify right side
    660,572.48x = 278,610,395,696.04
  5. Step 5: Solve for x
    x = 278,610,395,696.04/660,572.48
  6. Step 6: Final answer
    x = 421,771.12

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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.