Finding the Fourth Proportional to 1,273,931,486,873.80, 1,758,025,384,652.30 and 687,981,276,120.75
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Solution
The fourth proportional to 1,273,931,486,873.80, 1,758,025,384,652.30 and 687,981,276,120.75 is: 949,414,124,737.45
Step by Step Solution
- Step 1: Write the proportion equation
1,273,931,486,873.80 : 1,758,025,384,652.30 = 687,981,276,120.75 : x - Step 2: Convert to fraction form
1,273,931,486,873.80/1,758,025,384,652.30 = 687,981,276,120.75/x - Step 3: Cross multiply
1,273,931,486,873.80x = 1,758,025,384,652.30 × 687,981,276,120.75 - Step 4: Simplify right side
1,273,931,486,873.80x = 1,209,488,547,585,761,659,060,224 - Step 5: Solve for x
x = 1,209,488,547,585,761,659,060,224/1,273,931,486,873.80 - Step 6: Final answer
x = 949,414,124,737.45
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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.