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Finding the Fourth Proportional to 628,021.68, 866,661.64 and 341,535.64

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Solution

The fourth proportional to 628,021.68, 866,661.64 and 341,535.64 is: 471,314.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,021.68 : 866,661.64 = 341,535.64 : x
  2. Step 2: Convert to fraction form
    628,021.68/866,661.64 = 341,535.64/x
  3. Step 3: Cross multiply
    628,021.68x = 866,661.64 × 341,535.64
  4. Step 4: Simplify right side
    628,021.68x = 295,995,837,880.85
  5. Step 5: Solve for x
    x = 295,995,837,880.85/628,021.68
  6. Step 6: Final answer
    x = 471,314.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.