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Finding the Fourth Proportional to 660,091,955.85, 990,137,933.78 and 660,091,955.85

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Solution

The fourth proportional to 660,091,955.85, 990,137,933.78 and 660,091,955.85 is: 990,137,933.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,091,955.85 : 990,137,933.78 = 660,091,955.85 : x
  2. Step 2: Convert to fraction form
    660,091,955.85/990,137,933.78 = 660,091,955.85/x
  3. Step 3: Cross multiply
    660,091,955.85x = 990,137,933.78 × 660,091,955.85
  4. Step 4: Simplify right side
    660,091,955.85x = 653,582,085,266,817,536
  5. Step 5: Solve for x
    x = 653,582,085,266,817,536/660,091,955.85
  6. Step 6: Final answer
    x = 990,137,933.78

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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.