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Finding the Fourth Proportional to 661,570.10, 990,022.35 and 451,618.10

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Solution

The fourth proportional to 661,570.10, 990,022.35 and 451,618.10 is: 675,834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,570.10 : 990,022.35 = 451,618.10 : x
  2. Step 2: Convert to fraction form
    661,570.10/990,022.35 = 451,618.10/x
  3. Step 3: Cross multiply
    661,570.10x = 990,022.35 × 451,618.10
  4. Step 4: Simplify right side
    661,570.10x = 447,112,012,664.54
  5. Step 5: Solve for x
    x = 447,112,012,664.54/661,570.10
  6. Step 6: Final answer
    x = 675,834.67

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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.