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Finding the Fourth Proportional to 556,997,611.48, 835,524,169.04 and 211,977,978.64

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Solution

The fourth proportional to 556,997,611.48, 835,524,169.04 and 211,977,978.64 is: 317,977,529.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,997,611.48 : 835,524,169.04 = 211,977,978.64 : x
  2. Step 2: Convert to fraction form
    556,997,611.48/835,524,169.04 = 211,977,978.64/x
  3. Step 3: Cross multiply
    556,997,611.48x = 835,524,169.04 × 211,977,978.64
  4. Step 4: Simplify right side
    556,997,611.48x = 177,112,724,456,405,984
  5. Step 5: Solve for x
    x = 177,112,724,456,405,984/556,997,611.48
  6. Step 6: Final answer
    x = 317,977,529.54

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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.