Finding the Fourth Proportional to 530,409.68, 731,968.41 and 288,691.68
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Solution
The fourth proportional to 530,409.68, 731,968.41 and 288,691.68 is: 398,396.17
Step by Step Solution
- Step 1: Write the proportion equation
530,409.68 : 731,968.41 = 288,691.68 : x - Step 2: Convert to fraction form
530,409.68/731,968.41 = 288,691.68/x - Step 3: Cross multiply
530,409.68x = 731,968.41 × 288,691.68 - Step 4: Simplify right side
530,409.68x = 211,313,184,886.53 - Step 5: Solve for x
x = 211,313,184,886.53/530,409.68 - Step 6: Final answer
x = 398,396.17
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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.