Finding the Fourth Proportional to 2,125,767,981.60, 3,188,651,972.40 and 2,112,853,965.30
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Solution
The fourth proportional to 2,125,767,981.60, 3,188,651,972.40 and 2,112,853,965.30 is: 3,169,280,947.95
Step by Step Solution
- Step 1: Write the proportion equation
2,125,767,981.60 : 3,188,651,972.40 = 2,112,853,965.30 : x - Step 2: Convert to fraction form
2,125,767,981.60/3,188,651,972.40 = 2,112,853,965.30/x - Step 3: Cross multiply
2,125,767,981.60x = 3,188,651,972.40 × 2,112,853,965.30 - Step 4: Simplify right side
2,125,767,981.60x = 6,737,155,963,847,006,208 - Step 5: Solve for x
x = 6,737,155,963,847,006,208/2,125,767,981.60 - Step 6: Final answer
x = 3,169,280,947.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.