Finding the Fourth Proportional to 1,512,675,711.51, 2,087,492,485.88 and 817,314,687.51
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Solution
The fourth proportional to 1,512,675,711.51, 2,087,492,485.88 and 817,314,687.51 is: 1,127,894,270.92
Step by Step Solution
- Step 1: Write the proportion equation
1,512,675,711.51 : 2,087,492,485.88 = 817,314,687.51 : x - Step 2: Convert to fraction form
1,512,675,711.51/2,087,492,485.88 = 817,314,687.51/x - Step 3: Cross multiply
1,512,675,711.51x = 2,087,492,485.88 × 817,314,687.51 - Step 4: Simplify right side
1,512,675,711.51x = 1,706,138,268,772,398,592 - Step 5: Solve for x
x = 1,706,138,268,772,398,592/1,512,675,711.51 - Step 6: Final answer
x = 1,127,894,270.92
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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.