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Finding the Fourth Proportional to 979,776,021.20, 1,469,664,031.80 and 880,006,830.80

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Solution

The fourth proportional to 979,776,021.20, 1,469,664,031.80 and 880,006,830.80 is: 1,320,010,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,776,021.20 : 1,469,664,031.80 = 880,006,830.80 : x
  2. Step 2: Convert to fraction form
    979,776,021.20/1,469,664,031.80 = 880,006,830.80/x
  3. Step 3: Cross multiply
    979,776,021.20x = 1,469,664,031.80 × 880,006,830.80
  4. Step 4: Simplify right side
    979,776,021.20x = 1,293,314,386,965,068,288
  5. Step 5: Solve for x
    x = 1,293,314,386,965,068,288/979,776,021.20
  6. Step 6: Final answer
    x = 1,320,010,246.20

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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.