Finding the Fourth Proportional to 643,392,789,095.15, 887,922,372,143.50 and 354,360,991,010.06
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Solution
The fourth proportional to 643,392,789,095.15, 887,922,372,143.50 and 354,360,991,010.06 is: 489,040,376,369.90
Step by Step Solution
- Step 1: Write the proportion equation
643,392,789,095.15 : 887,922,372,143.50 = 354,360,991,010.06 : x - Step 2: Convert to fraction form
643,392,789,095.15/887,922,372,143.50 = 354,360,991,010.06/x - Step 3: Cross multiply
643,392,789,095.15x = 887,922,372,143.50 × 354,360,991,010.06 - Step 4: Simplify right side
643,392,789,095.15x = 314,645,051,732,773,920,833,536 - Step 5: Solve for x
x = 314,645,051,732,773,920,833,536/643,392,789,095.15 - Step 6: Final answer
x = 489,040,376,369.90
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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.