Finding the Fourth Proportional to 644,118,978,711.68, 888,886,875,465.92 and 355,080,888,365.12
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Solution
The fourth proportional to 644,118,978,711.68, 888,886,875,465.92 and 355,080,888,365.12 is: 490,013,106,006.95
Step by Step Solution
- Step 1: Write the proportion equation
644,118,978,711.68 : 888,886,875,465.92 = 355,080,888,365.12 : x - Step 2: Convert to fraction form
644,118,978,711.68/888,886,875,465.92 = 355,080,888,365.12/x - Step 3: Cross multiply
644,118,978,711.68x = 888,886,875,465.92 × 355,080,888,365.12 - Step 4: Simplify right side
644,118,978,711.68x = 315,626,741,396,534,668,034,048 - Step 5: Solve for x
x = 315,626,741,396,534,668,034,048/644,118,978,711.68 - Step 6: Final answer
x = 490,013,106,006.95
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.