Finding the Fourth Proportional to 423,817.12, 585,385.68 and 316,862.56
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Solution
The fourth proportional to 423,817.12, 585,385.68 and 316,862.56 is: 437,657.65
Step by Step Solution
- Step 1: Write the proportion equation
423,817.12 : 585,385.68 = 316,862.56 : x - Step 2: Convert to fraction form
423,817.12/585,385.68 = 316,862.56/x - Step 3: Cross multiply
423,817.12x = 585,385.68 × 316,862.56 - Step 4: Simplify right side
423,817.12x = 185,486,805,152.14 - Step 5: Solve for x
x = 185,486,805,152.14/423,817.12 - Step 6: Final answer
x = 437,657.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.