Home / 20,473,600,515.20-30,710,400,772.80-9,987,419,279.60

Finding the Fourth Proportional to 20,473,600,515.20, 30,710,400,772.80 and 9,987,419,279.60

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Solution

The fourth proportional to 20,473,600,515.20, 30,710,400,772.80 and 9,987,419,279.60 is: 14,981,128,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473,600,515.20 : 30,710,400,772.80 = 9,987,419,279.60 : x
  2. Step 2: Convert to fraction form
    20,473,600,515.20/30,710,400,772.80 = 9,987,419,279.60/x
  3. Step 3: Cross multiply
    20,473,600,515.20x = 30,710,400,772.80 × 9,987,419,279.60
  4. Step 4: Simplify right side
    20,473,600,515.20x = 306,717,648,762,505,461,760
  5. Step 5: Solve for x
    x = 306,717,648,762,505,461,760/20,473,600,515.20
  6. Step 6: Final answer
    x = 14,981,128,919.40

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Double scale
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1.5x scale

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.