Finding the Fourth Proportional to 1,692,803,603.75, 2,538,199,495.40 and 643,618,608.26
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Solution
The fourth proportional to 1,692,803,603.75, 2,538,199,495.40 and 643,618,608.26 is: 965,045,456.59
Step by Step Solution
- Step 1: Write the proportion equation
1,692,803,603.75 : 2,538,199,495.40 = 643,618,608.26 : x - Step 2: Convert to fraction form
1,692,803,603.75/2,538,199,495.40 = 643,618,608.26/x - Step 3: Cross multiply
1,692,803,603.75x = 2,538,199,495.40 × 643,618,608.26 - Step 4: Simplify right side
1,692,803,603.75x = 1,633,632,426,699,673,088 - Step 5: Solve for x
x = 1,633,632,426,699,673,088/1,692,803,603.75 - Step 6: Final answer
x = 965,045,456.59
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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.