Home / 489,641,765.60-734,462,648.40-126,136,121.60

Finding the Fourth Proportional to 489,641,765.60, 734,462,648.40 and 126,136,121.60

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Solution

The fourth proportional to 489,641,765.60, 734,462,648.40 and 126,136,121.60 is: 189,204,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,641,765.60 : 734,462,648.40 = 126,136,121.60 : x
  2. Step 2: Convert to fraction form
    489,641,765.60/734,462,648.40 = 126,136,121.60/x
  3. Step 3: Cross multiply
    489,641,765.60x = 734,462,648.40 × 126,136,121.60
  4. Step 4: Simplify right side
    489,641,765.60x = 92,642,269,929,240,432
  5. Step 5: Solve for x
    x = 92,642,269,929,240,432/489,641,765.60
  6. Step 6: Final answer
    x = 189,204,182.40

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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.