Finding the Fourth Proportional to 701,433,973.08, 967,980,765.42 and 388,189,788.12
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Solution
The fourth proportional to 701,433,973.08, 967,980,765.42 and 388,189,788.12 is: 535,702,949.46
Step by Step Solution
- Step 1: Write the proportion equation
701,433,973.08 : 967,980,765.42 = 388,189,788.12 : x - Step 2: Convert to fraction form
701,433,973.08/967,980,765.42 = 388,189,788.12/x - Step 3: Cross multiply
701,433,973.08x = 967,980,765.42 × 388,189,788.12 - Step 4: Simplify right side
701,433,973.08x = 375,760,248,232,625,216 - Step 5: Solve for x
x = 375,760,248,232,625,216/701,433,973.08 - Step 6: Final answer
x = 535,702,949.46
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Double scale
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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.