Finding the Fourth Proportional to 1,191,705.99, 1,643,010.66 and 771,854.81
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Solution
The fourth proportional to 1,191,705.99, 1,643,010.66 and 771,854.81 is: 1,064,159.85
Step by Step Solution
- Step 1: Write the proportion equation
1,191,705.99 : 1,643,010.66 = 771,854.81 : x - Step 2: Convert to fraction form
1,191,705.99/1,643,010.66 = 771,854.81/x - Step 3: Cross multiply
1,191,705.99x = 1,643,010.66 × 771,854.81 - Step 4: Simplify right side
1,191,705.99x = 1,268,165,672,587.22 - Step 5: Solve for x
x = 1,268,165,672,587.22/1,191,705.99 - Step 6: Final answer
x = 1,064,159.85
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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.