Finding the Fourth Proportional to 13,313,533,719.87, 18,372,686,438.64 and 7,209,933,658.09
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Solution
The fourth proportional to 13,313,533,719.87, 18,372,686,438.64 and 7,209,933,658.09 is: 9,949,713,812.33
Step by Step Solution
- Step 1: Write the proportion equation
13,313,533,719.87 : 18,372,686,438.64 = 7,209,933,658.09 : x - Step 2: Convert to fraction form
13,313,533,719.87/18,372,686,438.64 = 7,209,933,658.09/x - Step 3: Cross multiply
13,313,533,719.87x = 18,372,686,438.64 × 7,209,933,658.09 - Step 4: Simplify right side
13,313,533,719.87x = 132,465,850,343,484,227,584 - Step 5: Solve for x
x = 132,465,850,343,484,227,584/13,313,533,719.87 - Step 6: Final answer
x = 9,949,713,812.33
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.