Home / 647,353,913.40-970,393,140.90-319,879,969.20

Finding the Fourth Proportional to 647,353,913.40, 970,393,140.90 and 319,879,969.20

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Solution

The fourth proportional to 647,353,913.40, 970,393,140.90 and 319,879,969.20 is: 479,504,829.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,353,913.40 : 970,393,140.90 = 319,879,969.20 : x
  2. Step 2: Convert to fraction form
    647,353,913.40/970,393,140.90 = 319,879,969.20/x
  3. Step 3: Cross multiply
    647,353,913.40x = 970,393,140.90 × 319,879,969.20
  4. Step 4: Simplify right side
    647,353,913.40x = 310,409,328,022,983,232
  5. Step 5: Solve for x
    x = 310,409,328,022,983,232/647,353,913.40
  6. Step 6: Final answer
    x = 479,504,829.73

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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.