Finding the Fourth Proportional to 455,497.60, 683,246.40 and 421,283.20
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Solution
The fourth proportional to 455,497.60, 683,246.40 and 421,283.20 is: 631,924.80
Step by Step Solution
- Step 1: Write the proportion equation
455,497.60 : 683,246.40 = 421,283.20 : x - Step 2: Convert to fraction form
455,497.60/683,246.40 = 421,283.20/x - Step 3: Cross multiply
455,497.60x = 683,246.40 × 421,283.20 - Step 4: Simplify right side
455,497.60x = 287,840,229,780.48 - Step 5: Solve for x
x = 287,840,229,780.48/455,497.60 - Step 6: Final answer
x = 631,924.80
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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.