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Finding the Fourth Proportional to 520,403.24, 718,147.14 and 294,043.88

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Solution

The fourth proportional to 520,403.24, 718,147.14 and 294,043.88 is: 405,775.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,403.24 : 718,147.14 = 294,043.88 : x
  2. Step 2: Convert to fraction form
    520,403.24/718,147.14 = 294,043.88/x
  3. Step 3: Cross multiply
    520,403.24x = 718,147.14 × 294,043.88
  4. Step 4: Simplify right side
    520,403.24x = 211,166,771,456.50
  5. Step 5: Solve for x
    x = 211,166,771,456.50/520,403.24
  6. Step 6: Final answer
    x = 405,775.28

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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.