Finding the Fourth Proportional to 1,207,448,994.70, 1,809,882,065.71 and 551,416,966.66
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Solution
The fourth proportional to 1,207,448,994.70, 1,809,882,065.71 and 551,416,966.66 is: 826,535,682.31
Step by Step Solution
- Step 1: Write the proportion equation
1,207,448,994.70 : 1,809,882,065.71 = 551,416,966.66 : x - Step 2: Convert to fraction form
1,207,448,994.70/1,809,882,065.71 = 551,416,966.66/x - Step 3: Cross multiply
1,207,448,994.70x = 1,809,882,065.71 × 551,416,966.66 - Step 4: Simplify right side
1,207,448,994.70x = 997,999,678,686,142,976 - Step 5: Solve for x
x = 997,999,678,686,142,976/1,207,448,994.70 - Step 6: Final answer
x = 826,535,682.31
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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.