Finding the Fourth Proportional to 1,248,299,101.94, 1,721,999,655.24 and 771,837,163.98
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Solution
The fourth proportional to 1,248,299,101.94, 1,721,999,655.24 and 771,837,163.98 is: 1,064,731,463.97
Step by Step Solution
- Step 1: Write the proportion equation
1,248,299,101.94 : 1,721,999,655.24 = 771,837,163.98 : x - Step 2: Convert to fraction form
1,248,299,101.94/1,721,999,655.24 = 771,837,163.98/x - Step 3: Cross multiply
1,248,299,101.94x = 1,721,999,655.24 × 771,837,163.98 - Step 4: Simplify right side
1,248,299,101.94x = 1,329,103,330,274,979,328 - Step 5: Solve for x
x = 1,329,103,330,274,979,328/1,248,299,101.94 - Step 6: Final answer
x = 1,064,731,463.97
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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.