Home / 979,856,008.20-1,469,784,012.30-865,064,752.20

Finding the Fourth Proportional to 979,856,008.20, 1,469,784,012.30 and 865,064,752.20

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Solution

The fourth proportional to 979,856,008.20, 1,469,784,012.30 and 865,064,752.20 is: 1,297,597,128.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,856,008.20 : 1,469,784,012.30 = 865,064,752.20 : x
  2. Step 2: Convert to fraction form
    979,856,008.20/1,469,784,012.30 = 865,064,752.20/x
  3. Step 3: Cross multiply
    979,856,008.20x = 1,469,784,012.30 × 865,064,752.20
  4. Step 4: Simplify right side
    979,856,008.20x = 1,271,458,342,387,821,312
  5. Step 5: Solve for x
    x = 1,271,458,342,387,821,312/979,856,008.20
  6. Step 6: Final answer
    x = 1,297,597,128.30

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Double scale
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Similar ratio
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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.