Finding the Fourth Proportional to 905,575.80, 1,358,363.70 and 485,671.80
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Solution
The fourth proportional to 905,575.80, 1,358,363.70 and 485,671.80 is: 728,507.70
Step by Step Solution
- Step 1: Write the proportion equation
905,575.80 : 1,358,363.70 = 485,671.80 : x - Step 2: Convert to fraction form
905,575.80/1,358,363.70 = 485,671.80/x - Step 3: Cross multiply
905,575.80x = 1,358,363.70 × 485,671.80 - Step 4: Simplify right side
905,575.80x = 659,718,943,233.66 - Step 5: Solve for x
x = 659,718,943,233.66/905,575.80 - Step 6: Final answer
x = 728,507.70
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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.