Finding the Fourth Proportional to 28,321,765,400.88, 39,083,837,427.91 and 15,461,405,358.99
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Solution
The fourth proportional to 28,321,765,400.88, 39,083,837,427.91 and 15,461,405,358.99 is: 21,336,630,852.78
Step by Step Solution
- Step 1: Write the proportion equation
28,321,765,400.88 : 39,083,837,427.91 = 15,461,405,358.99 : x - Step 2: Convert to fraction form
28,321,765,400.88/39,083,837,427.91 = 15,461,405,358.99/x - Step 3: Cross multiply
28,321,765,400.88x = 39,083,837,427.91 × 15,461,405,358.99 - Step 4: Simplify right side
28,321,765,400.88x = 604,291,053,457,625,317,376 - Step 5: Solve for x
x = 604,291,053,457,625,317,376/28,321,765,400.88 - Step 6: Final answer
x = 21,336,630,852.78
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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.