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Finding the Fourth Proportional to 555,729.60, 766,907.60 and 301,080.78

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Solution

The fourth proportional to 555,729.60, 766,907.60 and 301,080.78 is: 415,491.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,729.60 : 766,907.60 = 301,080.78 : x
  2. Step 2: Convert to fraction form
    555,729.60/766,907.60 = 301,080.78/x
  3. Step 3: Cross multiply
    555,729.60x = 766,907.60 × 301,080.78
  4. Step 4: Simplify right side
    555,729.60x = 230,901,138,395.93
  5. Step 5: Solve for x
    x = 230,901,138,395.93/555,729.60
  6. Step 6: Final answer
    x = 415,491.88

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1.5x scale

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.