Finding the Fourth Proportional to 1,138,621.25, 1,708,230.95 and 409,218.08
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Solution
The fourth proportional to 1,138,621.25, 1,708,230.95 and 409,218.08 is: 613,934.61
Step by Step Solution
- Step 1: Write the proportion equation
1,138,621.25 : 1,708,230.95 = 409,218.08 : x - Step 2: Convert to fraction form
1,138,621.25/1,708,230.95 = 409,218.08/x - Step 3: Cross multiply
1,138,621.25x = 1,708,230.95 × 409,218.08 - Step 4: Simplify right side
1,138,621.25x = 699,038,994,849.20 - Step 5: Solve for x
x = 699,038,994,849.20/1,138,621.25 - Step 6: Final answer
x = 613,934.61
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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.