Finding the Fourth Proportional to 715,678,865.90, 1,073,398,713.64 and 198,161,620.10
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Solution
The fourth proportional to 715,678,865.90, 1,073,398,713.64 and 198,161,620.10 is: 297,209,318.65
Step by Step Solution
- Step 1: Write the proportion equation
715,678,865.90 : 1,073,398,713.64 = 198,161,620.10 : x - Step 2: Convert to fraction form
715,678,865.90/1,073,398,713.64 = 198,161,620.10/x - Step 3: Cross multiply
715,678,865.90x = 1,073,398,713.64 × 198,161,620.10 - Step 4: Simplify right side
715,678,865.90x = 212,706,428,108,158,368 - Step 5: Solve for x
x = 212,706,428,108,158,368/715,678,865.90 - Step 6: Final answer
x = 297,209,318.65
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.