Finding the Fourth Proportional to 993,051,206.40, 1,489,576,809.60 and 838,083,010.80
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Solution
The fourth proportional to 993,051,206.40, 1,489,576,809.60 and 838,083,010.80 is: 1,257,124,516.20
Step by Step Solution
- Step 1: Write the proportion equation
993,051,206.40 : 1,489,576,809.60 = 838,083,010.80 : x - Step 2: Convert to fraction form
993,051,206.40/1,489,576,809.60 = 838,083,010.80/x - Step 3: Cross multiply
993,051,206.40x = 1,489,576,809.60 × 838,083,010.80 - Step 4: Simplify right side
993,051,206.40x = 1,248,389,017,407,426,304 - Step 5: Solve for x
x = 1,248,389,017,407,426,304/993,051,206.40 - Step 6: Final answer
x = 1,257,124,516.20
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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.