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Finding the Fourth Proportional to 656,479.09, 984,718.52 and 207,515.12

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Solution

The fourth proportional to 656,479.09, 984,718.52 and 207,515.12 is: 311,272.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,479.09 : 984,718.52 = 207,515.12 : x
  2. Step 2: Convert to fraction form
    656,479.09/984,718.52 = 207,515.12/x
  3. Step 3: Cross multiply
    656,479.09x = 984,718.52 × 207,515.12
  4. Step 4: Simplify right side
    656,479.09x = 204,343,980,806.45
  5. Step 5: Solve for x
    x = 204,343,980,806.45/656,479.09
  6. Step 6: Final answer
    x = 311,272.64

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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.