Finding the Fourth Proportional to 1,212,875,639.73, 1,673,768,381.58 and 655,958,686.14
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Solution
The fourth proportional to 1,212,875,639.73, 1,673,768,381.58 and 655,958,686.14 is: 905,222,986.20
Step by Step Solution
- Step 1: Write the proportion equation
1,212,875,639.73 : 1,673,768,381.58 = 655,958,686.14 : x - Step 2: Convert to fraction form
1,212,875,639.73/1,673,768,381.58 = 655,958,686.14/x - Step 3: Cross multiply
1,212,875,639.73x = 1,673,768,381.58 × 655,958,686.14 - Step 4: Simplify right side
1,212,875,639.73x = 1,097,922,908,483,890,944 - Step 5: Solve for x
x = 1,097,922,908,483,890,944/1,212,875,639.73 - Step 6: Final answer
x = 905,222,986.20
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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.