Finding the Fourth Proportional to 1,490,186,221.61, 2,056,565,675.63 and 863,816,357.93
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Solution
The fourth proportional to 1,490,186,221.61, 2,056,565,675.63 and 863,816,357.93 is: 1,192,129,578.17
Step by Step Solution
- Step 1: Write the proportion equation
1,490,186,221.61 : 2,056,565,675.63 = 863,816,357.93 : x - Step 2: Convert to fraction form
1,490,186,221.61/2,056,565,675.63 = 863,816,357.93/x - Step 3: Cross multiply
1,490,186,221.61x = 2,056,565,675.63 × 863,816,357.93 - Step 4: Simplify right side
1,490,186,221.61x = 1,776,495,071,758,433,024 - Step 5: Solve for x
x = 1,776,495,071,758,433,024/1,490,186,221.61 - Step 6: Final answer
x = 1,192,129,578.17
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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.