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Finding the Fourth Proportional to 661,569.60, 990,021.60 and 451,617.60

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Solution

The fourth proportional to 661,569.60, 990,021.60 and 451,617.60 is: 675,833.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,569.60 : 990,021.60 = 451,617.60 : x
  2. Step 2: Convert to fraction form
    661,569.60/990,021.60 = 451,617.60/x
  3. Step 3: Cross multiply
    661,569.60x = 990,021.60 × 451,617.60
  4. Step 4: Simplify right side
    661,569.60x = 447,111,178,940.16
  5. Step 5: Solve for x
    x = 447,111,178,940.16/661,569.60
  6. Step 6: Final answer
    x = 675,833.92

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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.