Finding the Fourth Proportional to 809,859,392.10, 1,117,600,396.56 and 438,572,926.98
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Solution
The fourth proportional to 809,859,392.10, 1,117,600,396.56 and 438,572,926.98 is: 605,227,625.80
Step by Step Solution
- Step 1: Write the proportion equation
809,859,392.10 : 1,117,600,396.56 = 438,572,926.98 : x - Step 2: Convert to fraction form
809,859,392.10/1,117,600,396.56 = 438,572,926.98/x - Step 3: Cross multiply
809,859,392.10x = 1,117,600,396.56 × 438,572,926.98 - Step 4: Simplify right side
809,859,392.10x = 490,149,277,113,327,936 - Step 5: Solve for x
x = 490,149,277,113,327,936/809,859,392.10 - Step 6: Final answer
x = 605,227,625.80
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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.