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Finding the Fourth Proportional to 556,278.90, 767,660.61 and 301,629.30

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Solution

The fourth proportional to 556,278.90, 767,660.61 and 301,629.30 is: 416,246.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,278.90 : 767,660.61 = 301,629.30 : x
  2. Step 2: Convert to fraction form
    556,278.90/767,660.61 = 301,629.30/x
  3. Step 3: Cross multiply
    556,278.90x = 767,660.61 × 301,629.30
  4. Step 4: Simplify right side
    556,278.90x = 231,548,932,431.87
  5. Step 5: Solve for x
    x = 231,548,932,431.87/556,278.90
  6. Step 6: Final answer
    x = 416,246.12

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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.