Finding the Fourth Proportional to 43,478,475.20, 65,209,418.40 and 13,187,326.40
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Solution
The fourth proportional to 43,478,475.20, 65,209,418.40 and 13,187,326.40 is: 19,778,473.85
Step by Step Solution
- Step 1: Write the proportion equation
43,478,475.20 : 65,209,418.40 = 13,187,326.40 : x - Step 2: Convert to fraction form
43,478,475.20/65,209,418.40 = 13,187,326.40/x - Step 3: Cross multiply
43,478,475.20x = 65,209,418.40 × 13,187,326.40 - Step 4: Simplify right side
43,478,475.20x = 859,937,884,794,965.75 - Step 5: Solve for x
x = 859,937,884,794,965.75/43,478,475.20 - Step 6: Final answer
x = 19,778,473.85
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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.