Finding the Fourth Proportional to 870,984,090.40, 1,306,476,135.60 and 435,627,623.20
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Solution
The fourth proportional to 870,984,090.40, 1,306,476,135.60 and 435,627,623.20 is: 653,441,434.80
Step by Step Solution
- Step 1: Write the proportion equation
870,984,090.40 : 1,306,476,135.60 = 435,627,623.20 : x - Step 2: Convert to fraction form
870,984,090.40/1,306,476,135.60 = 435,627,623.20/x - Step 3: Cross multiply
870,984,090.40x = 1,306,476,135.60 × 435,627,623.20 - Step 4: Simplify right side
870,984,090.40x = 569,137,093,718,948,864 - Step 5: Solve for x
x = 569,137,093,718,948,864/870,984,090.40 - Step 6: Final answer
x = 653,441,434.80
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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.