Finding the Fourth Proportional to 1,247,429,645.26, 1,721,177,700.60 and 738,539,670.82
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Solution
The fourth proportional to 1,247,429,645.26, 1,721,177,700.60 and 738,539,670.82 is: 1,019,021,807.97
Step by Step Solution
- Step 1: Write the proportion equation
1,247,429,645.26 : 1,721,177,700.60 = 738,539,670.82 : x - Step 2: Convert to fraction form
1,247,429,645.26/1,721,177,700.60 = 738,539,670.82/x - Step 3: Cross multiply
1,247,429,645.26x = 1,721,177,700.60 × 738,539,670.82 - Step 4: Simplify right side
1,247,429,645.26x = 1,271,158,012,423,848,448 - Step 5: Solve for x
x = 1,271,158,012,423,848,448/1,247,429,645.26 - Step 6: Final answer
x = 1,019,021,807.97
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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.