Home / 489,634,008.60-734,451,012.90-126,128,364.60

Finding the Fourth Proportional to 489,634,008.60, 734,451,012.90 and 126,128,364.60

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Solution

The fourth proportional to 489,634,008.60, 734,451,012.90 and 126,128,364.60 is: 189,192,546.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,634,008.60 : 734,451,012.90 = 126,128,364.60 : x
  2. Step 2: Convert to fraction form
    489,634,008.60/734,451,012.90 = 126,128,364.60/x
  3. Step 3: Cross multiply
    489,634,008.60x = 734,451,012.90 × 126,128,364.60
  4. Step 4: Simplify right side
    489,634,008.60x = 92,635,105,135,890,496
  5. Step 5: Solve for x
    x = 92,635,105,135,890,496/489,634,008.60
  6. Step 6: Final answer
    x = 189,192,546.90

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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.