Finding the Fourth Proportional to 1,280,451,939.09, 1,766,482,595.40 and 857,201,964.93
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Solution
The fourth proportional to 1,280,451,939.09, 1,766,482,595.40 and 857,201,964.93 is: 1,182,576,483.79
Step by Step Solution
- Step 1: Write the proportion equation
1,280,451,939.09 : 1,766,482,595.40 = 857,201,964.93 : x - Step 2: Convert to fraction form
1,280,451,939.09/1,766,482,595.40 = 857,201,964.93/x - Step 3: Cross multiply
1,280,451,939.09x = 1,766,482,595.40 × 857,201,964.93 - Step 4: Simplify right side
1,280,451,939.09x = 1,514,232,351,791,526,144 - Step 5: Solve for x
x = 1,514,232,351,791,526,144/1,280,451,939.09 - Step 6: Final answer
x = 1,182,576,483.79
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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.