Finding the Fourth Proportional to 1,053,813.12, 1,580,719.68 and 388,965.12
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Solution
The fourth proportional to 1,053,813.12, 1,580,719.68 and 388,965.12 is: 583,447.68
Step by Step Solution
- Step 1: Write the proportion equation
1,053,813.12 : 1,580,719.68 = 388,965.12 : x - Step 2: Convert to fraction form
1,053,813.12/1,580,719.68 = 388,965.12/x - Step 3: Cross multiply
1,053,813.12x = 1,580,719.68 × 388,965.12 - Step 4: Simplify right side
1,053,813.12x = 614,844,820,017.56 - Step 5: Solve for x
x = 614,844,820,017.56/1,053,813.12 - Step 6: Final answer
x = 583,447.68
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1.5x scale
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.