Finding the Fourth Proportional to 870,912,074.70, 1,201,858,128.27 and 479,771,498.70
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Solution
The fourth proportional to 870,912,074.70, 1,201,858,128.27 and 479,771,498.70 is: 662,084,373.58
Step by Step Solution
- Step 1: Write the proportion equation
870,912,074.70 : 1,201,858,128.27 = 479,771,498.70 : x - Step 2: Convert to fraction form
870,912,074.70/1,201,858,128.27 = 479,771,498.70/x - Step 3: Cross multiply
870,912,074.70x = 1,201,858,128.27 × 479,771,498.70 - Step 4: Simplify right side
870,912,074.70x = 576,617,275,424,874,752 - Step 5: Solve for x
x = 576,617,275,424,874,752/870,912,074.70 - Step 6: Final answer
x = 662,084,373.58
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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.