Home / 630,017,999.20-945,026,998.80-412,339,765.60

Finding the Fourth Proportional to 630,017,999.20, 945,026,998.80 and 412,339,765.60

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Solution

The fourth proportional to 630,017,999.20, 945,026,998.80 and 412,339,765.60 is: 618,509,648.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,017,999.20 : 945,026,998.80 = 412,339,765.60 : x
  2. Step 2: Convert to fraction form
    630,017,999.20/945,026,998.80 = 412,339,765.60/x
  3. Step 3: Cross multiply
    630,017,999.20x = 945,026,998.80 × 412,339,765.60
  4. Step 4: Simplify right side
    630,017,999.20x = 389,672,211,170,863,488
  5. Step 5: Solve for x
    x = 389,672,211,170,863,488/630,017,999.20
  6. Step 6: Final answer
    x = 618,509,648.40

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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.