Finding the Fourth Proportional to 1,211,151,214.34, 1,816,726,823.94 and 291,027,554.18
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Solution
The fourth proportional to 1,211,151,214.34, 1,816,726,823.94 and 291,027,554.18 is: 436,541,331.85
Step by Step Solution
- Step 1: Write the proportion equation
1,211,151,214.34 : 1,816,726,823.94 = 291,027,554.18 : x - Step 2: Convert to fraction form
1,211,151,214.34/1,816,726,823.94 = 291,027,554.18/x - Step 3: Cross multiply
1,211,151,214.34x = 1,816,726,823.94 × 291,027,554.18 - Step 4: Simplify right side
1,211,151,214.34x = 528,717,564,175,374,080 - Step 5: Solve for x
x = 528,717,564,175,374,080/1,211,151,214.34 - Step 6: Final answer
x = 436,541,331.85
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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.