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Finding the Fourth Proportional to 550,614,776.54, 759,866,745.70 and 309,253,285.69

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Solution

The fourth proportional to 550,614,776.54, 759,866,745.70 and 309,253,285.69 is: 426,779,842.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,614,776.54 : 759,866,745.70 = 309,253,285.69 : x
  2. Step 2: Convert to fraction form
    550,614,776.54/759,866,745.70 = 309,253,285.69/x
  3. Step 3: Cross multiply
    550,614,776.54x = 759,866,745.70 × 309,253,285.69
  4. Step 4: Simplify right side
    550,614,776.54x = 234,991,287,794,907,168
  5. Step 5: Solve for x
    x = 234,991,287,794,907,168/550,614,776.54
  6. Step 6: Final answer
    x = 426,779,842.84

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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.