Finding the Fourth Proportional to 1,035,471,861.40, 1,553,207,792.10 and 491,276,277.40
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Solution
The fourth proportional to 1,035,471,861.40, 1,553,207,792.10 and 491,276,277.40 is: 736,914,416.10
Step by Step Solution
- Step 1: Write the proportion equation
1,035,471,861.40 : 1,553,207,792.10 = 491,276,277.40 : x - Step 2: Convert to fraction form
1,035,471,861.40/1,553,207,792.10 = 491,276,277.40/x - Step 3: Cross multiply
1,035,471,861.40x = 1,553,207,792.10 × 491,276,277.40 - Step 4: Simplify right side
1,035,471,861.40x = 763,054,142,131,561,088 - Step 5: Solve for x
x = 763,054,142,131,561,088/1,035,471,861.40 - Step 6: Final answer
x = 736,914,416.10
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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.