Finding the Fourth Proportional to 28,552,368,794.20, 39,403,213,884.86 and 15,692,464,579.25
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Solution
The fourth proportional to 28,552,368,794.20, 39,403,213,884.86 and 15,692,464,579.25 is: 21,656,120,465.99
Step by Step Solution
- Step 1: Write the proportion equation
28,552,368,794.20 : 39,403,213,884.86 = 15,692,464,579.25 : x - Step 2: Convert to fraction form
28,552,368,794.20/39,403,213,884.86 = 15,692,464,579.25/x - Step 3: Cross multiply
28,552,368,794.20x = 39,403,213,884.86 × 15,692,464,579.25 - Step 4: Simplify right side
28,552,368,794.20x = 618,333,538,196,580,728,832 - Step 5: Solve for x
x = 618,333,538,196,580,728,832/28,552,368,794.20 - Step 6: Final answer
x = 21,656,120,465.99
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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.