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Finding the Fourth Proportional to 979,856,000.20, 1,469,784,000.30 and 865,064,744.20

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Solution

The fourth proportional to 979,856,000.20, 1,469,784,000.30 and 865,064,744.20 is: 1,297,597,116.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,856,000.20 : 1,469,784,000.30 = 865,064,744.20 : x
  2. Step 2: Convert to fraction form
    979,856,000.20/1,469,784,000.30 = 865,064,744.20/x
  3. Step 3: Cross multiply
    979,856,000.20x = 1,469,784,000.30 × 865,064,744.20
  4. Step 4: Simplify right side
    979,856,000.20x = 1,271,458,320,248,772,352
  5. Step 5: Solve for x
    x = 1,271,458,320,248,772,352/979,856,000.20
  6. Step 6: Final answer
    x = 1,297,597,116.30

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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.