Finding the Fourth Proportional to 1,385,317.77, 1,911,719.84 and 773,479.95
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Solution
The fourth proportional to 1,385,317.77, 1,911,719.84 and 773,479.95 is: 1,067,391.90
Step by Step Solution
- Step 1: Write the proportion equation
1,385,317.77 : 1,911,719.84 = 773,479.95 : x - Step 2: Convert to fraction form
1,385,317.77/1,911,719.84 = 773,479.95/x - Step 3: Cross multiply
1,385,317.77x = 1,911,719.84 × 773,479.95 - Step 4: Simplify right side
1,385,317.77x = 1,478,676,962,389.81 - Step 5: Solve for x
x = 1,478,676,962,389.81/1,385,317.77 - Step 6: Final answer
x = 1,067,391.90
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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.