Finding the Fourth Proportional to 690,411,959.68, 1,035,610,853.63 and 399,093,718.18
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Solution
The fourth proportional to 690,411,959.68, 1,035,610,853.63 and 399,093,718.18 is: 598,636,481.26
Step by Step Solution
- Step 1: Write the proportion equation
690,411,959.68 : 1,035,610,853.63 = 399,093,718.18 : x - Step 2: Convert to fraction form
690,411,959.68/1,035,610,853.63 = 399,093,718.18/x - Step 3: Cross multiply
690,411,959.68x = 1,035,610,853.63 × 399,093,718.18 - Step 4: Simplify right side
690,411,959.68x = 413,305,786,162,760,448 - Step 5: Solve for x
x = 413,305,786,162,760,448/690,411,959.68 - Step 6: Final answer
x = 598,636,481.26
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1.5x scale
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.