Finding the Fourth Proportional to 672,781.68, 928,468.44 and 386,313.84
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Solution
The fourth proportional to 672,781.68, 928,468.44 and 386,313.84 is: 533,130.17
Step by Step Solution
- Step 1: Write the proportion equation
672,781.68 : 928,468.44 = 386,313.84 : x - Step 2: Convert to fraction form
672,781.68/928,468.44 = 386,313.84/x - Step 3: Cross multiply
672,781.68x = 928,468.44 × 386,313.84 - Step 4: Simplify right side
672,781.68x = 358,680,208,375.21 - Step 5: Solve for x
x = 358,680,208,375.21/672,781.68 - Step 6: Final answer
x = 533,130.17
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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.