Finding the Fourth Proportional to 880,631,461.68, 1,215,272,195.82 and 484,161,195.84
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Solution
The fourth proportional to 880,631,461.68, 1,215,272,195.82 and 484,161,195.84 is: 668,142,878.38
Step by Step Solution
- Step 1: Write the proportion equation
880,631,461.68 : 1,215,272,195.82 = 484,161,195.84 : x - Step 2: Convert to fraction form
880,631,461.68/1,215,272,195.82 = 484,161,195.84/x - Step 3: Cross multiply
880,631,461.68x = 1,215,272,195.82 × 484,161,195.84 - Step 4: Simplify right side
880,631,461.68x = 588,387,639,599,313,792 - Step 5: Solve for x
x = 588,387,639,599,313,792/880,631,461.68 - Step 6: Final answer
x = 668,142,878.38
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Double scale
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1.5x scale
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.