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Finding the Fourth Proportional to 520,090.60, 779,261.10 and 444,857.80

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Solution

The fourth proportional to 520,090.60, 779,261.10 and 444,857.80 is: 666,538.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,090.60 : 779,261.10 = 444,857.80 : x
  2. Step 2: Convert to fraction form
    520,090.60/779,261.10 = 444,857.80/x
  3. Step 3: Cross multiply
    520,090.60x = 779,261.10 × 444,857.80
  4. Step 4: Simplify right side
    520,090.60x = 346,660,378,571.58
  5. Step 5: Solve for x
    x = 346,660,378,571.58/520,090.60
  6. Step 6: Final answer
    x = 666,538.44

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1.5x scale

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.