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Finding the Fourth Proportional to 516,380.40, 774,570.60 and 479,055.60

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Solution

The fourth proportional to 516,380.40, 774,570.60 and 479,055.60 is: 718,583.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,380.40 : 774,570.60 = 479,055.60 : x
  2. Step 2: Convert to fraction form
    516,380.40/774,570.60 = 479,055.60/x
  3. Step 3: Cross multiply
    516,380.40x = 774,570.60 × 479,055.60
  4. Step 4: Simplify right side
    516,380.40x = 371,062,383,525.36
  5. Step 5: Solve for x
    x = 371,062,383,525.36/516,380.40
  6. Step 6: Final answer
    x = 718,583.40

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Similar ratio
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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.