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Finding the Fourth Proportional to 520,679.88, 718,518.60 and 294,330.24

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Solution

The fourth proportional to 520,679.88, 718,518.60 and 294,330.24 is: 406,164.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,679.88 : 718,518.60 = 294,330.24 : x
  2. Step 2: Convert to fraction form
    520,679.88/718,518.60 = 294,330.24/x
  3. Step 3: Cross multiply
    520,679.88x = 718,518.60 × 294,330.24
  4. Step 4: Simplify right side
    520,679.88x = 211,481,751,982.46
  5. Step 5: Solve for x
    x = 211,481,751,982.46/520,679.88
  6. Step 6: Final answer
    x = 406,164.63

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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.