Finding the Fourth Proportional to 455,121.20, 683,243.40 and 286,641.20
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Solution
The fourth proportional to 455,121.20, 683,243.40 and 286,641.20 is: 430,315.50
Step by Step Solution
- Step 1: Write the proportion equation
455,121.20 : 683,243.40 = 286,641.20 : x - Step 2: Convert to fraction form
455,121.20/683,243.40 = 286,641.20/x - Step 3: Cross multiply
455,121.20x = 683,243.40 × 286,641.20 - Step 4: Simplify right side
455,121.20x = 195,845,708,068.08 - Step 5: Solve for x
x = 195,845,708,068.08/455,121.20 - Step 6: Final answer
x = 430,315.50
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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.