Finding the Fourth Proportional to 1,273,931,465,811.80, 1,758,025,355,577.40 and 687,981,255,064.99
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Solution
The fourth proportional to 1,273,931,465,811.80, 1,758,025,355,577.40 and 687,981,255,064.99 is: 949,414,095,675.45
Step by Step Solution
- Step 1: Write the proportion equation
1,273,931,465,811.80 : 1,758,025,355,577.40 = 687,981,255,064.99 : x - Step 2: Convert to fraction form
1,273,931,465,811.80/1,758,025,355,577.40 = 687,981,255,064.99/x - Step 3: Cross multiply
1,273,931,465,811.80x = 1,758,025,355,577.40 × 687,981,255,064.99 - Step 4: Simplify right side
1,273,931,465,811.80x = 1,209,488,490,566,214,997,770,240 - Step 5: Solve for x
x = 1,209,488,490,566,214,997,770,240/1,273,931,465,811.80 - Step 6: Final answer
x = 949,414,095,675.45
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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.