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Finding the Fourth Proportional to 628,020.66, 866,660.28 and 341,534.64

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Solution

The fourth proportional to 628,020.66, 866,660.28 and 341,534.64 is: 471,313.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,020.66 : 866,660.28 = 341,534.64 : x
  2. Step 2: Convert to fraction form
    628,020.66/866,660.28 = 341,534.64/x
  3. Step 3: Cross multiply
    628,020.66x = 866,660.28 × 341,534.64
  4. Step 4: Simplify right side
    628,020.66x = 295,994,506,732.10
  5. Step 5: Solve for x
    x = 295,994,506,732.10/628,020.66
  6. Step 6: Final answer
    x = 471,313.33

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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.