Finding the Fourth Proportional to 1,186,347,907.10, 1,779,521,860.65 and 798,356,611.10
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Solution
The fourth proportional to 1,186,347,907.10, 1,779,521,860.65 and 798,356,611.10 is: 1,197,534,916.65
Step by Step Solution
- Step 1: Write the proportion equation
1,186,347,907.10 : 1,779,521,860.65 = 798,356,611.10 : x - Step 2: Convert to fraction form
1,186,347,907.10/1,779,521,860.65 = 798,356,611.10/x - Step 3: Cross multiply
1,186,347,907.10x = 1,779,521,860.65 × 798,356,611.10 - Step 4: Simplify right side
1,186,347,907.10x = 1,420,693,042,046,900,480 - Step 5: Solve for x
x = 1,420,693,042,046,900,480/1,186,347,907.10 - Step 6: Final answer
x = 1,197,534,916.65
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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.