Finding the Fourth Proportional to 14,405,646,531, 19,879,792,212.78 and 7,812,593,859
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Solution
The fourth proportional to 14,405,646,531, 19,879,792,212.78 and 7,812,593,859 is: 10,781,379,525.42
Step by Step Solution
- Step 1: Write the proportion equation
14,405,646,531 : 19,879,792,212.78 = 7,812,593,859 : x - Step 2: Convert to fraction form
14,405,646,531/19,879,792,212.78 = 7,812,593,859/x - Step 3: Cross multiply
14,405,646,531x = 19,879,792,212.78 × 7,812,593,859 - Step 4: Simplify right side
14,405,646,531x = 155,312,742,559,761,039,360 - Step 5: Solve for x
x = 155,312,742,559,761,039,360/14,405,646,531 - Step 6: Final answer
x = 10,781,379,525.42
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.