Finding the Fourth Proportional to 853,876,339.20, 1,178,475,713.28 and 540,639,671.04
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Solution
The fourth proportional to 853,876,339.20, 1,178,475,713.28 and 540,639,671.04 is: 746,162,755.32
Step by Step Solution
- Step 1: Write the proportion equation
853,876,339.20 : 1,178,475,713.28 = 540,639,671.04 : x - Step 2: Convert to fraction form
853,876,339.20/1,178,475,713.28 = 540,639,671.04/x - Step 3: Cross multiply
853,876,339.20x = 1,178,475,713.28 × 540,639,671.04 - Step 4: Simplify right side
853,876,339.20x = 637,130,721,956,328,448 - Step 5: Solve for x
x = 637,130,721,956,328,448/853,876,339.20 - Step 6: Final answer
x = 746,162,755.32
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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.