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Finding the Fourth Proportional to 558,709.65, 771,021.72 and 304,060.50

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Solution

The fourth proportional to 558,709.65, 771,021.72 and 304,060.50 is: 419,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,709.65 : 771,021.72 = 304,060.50 : x
  2. Step 2: Convert to fraction form
    558,709.65/771,021.72 = 304,060.50/x
  3. Step 3: Cross multiply
    558,709.65x = 771,021.72 × 304,060.50
  4. Step 4: Simplify right side
    558,709.65x = 234,437,249,694.06
  5. Step 5: Solve for x
    x = 234,437,249,694.06/558,709.65
  6. Step 6: Final answer
    x = 419,604.80

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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.