Finding the Fourth Proportional to 1,663,460,146.80, 2,495,190,220.20 and 436,752,601.20
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Solution
The fourth proportional to 1,663,460,146.80, 2,495,190,220.20 and 436,752,601.20 is: 655,128,901.80
Step by Step Solution
- Step 1: Write the proportion equation
1,663,460,146.80 : 2,495,190,220.20 = 436,752,601.20 : x - Step 2: Convert to fraction form
1,663,460,146.80/2,495,190,220.20 = 436,752,601.20/x - Step 3: Cross multiply
1,663,460,146.80x = 2,495,190,220.20 × 436,752,601.20 - Step 4: Simplify right side
1,663,460,146.80x = 1,089,780,819,161,150,720 - Step 5: Solve for x
x = 1,089,780,819,161,150,720/1,663,460,146.80 - Step 6: Final answer
x = 655,128,901.80
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Double scale
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Similar ratio
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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.