Finding the Fourth Proportional to 1,578,282,149.93, 2,177,940,749.59 and 863,816,248.21
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Solution
The fourth proportional to 1,578,282,149.93, 2,177,940,749.59 and 863,816,248.21 is: 1,192,017,921.01
Step by Step Solution
- Step 1: Write the proportion equation
1,578,282,149.93 : 2,177,940,749.59 = 863,816,248.21 : x - Step 2: Convert to fraction form
1,578,282,149.93/2,177,940,749.59 = 863,816,248.21/x - Step 3: Cross multiply
1,578,282,149.93x = 2,177,940,749.59 × 863,816,248.21 - Step 4: Simplify right side
1,578,282,149.93x = 1,881,340,607,134,509,056 - Step 5: Solve for x
x = 1,881,340,607,134,509,056/1,578,282,149.93 - Step 6: Final answer
x = 1,192,017,921.01
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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.