Finding the Fourth Proportional to 387,390.57, 534,562.26 and 358,825.62
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Solution
The fourth proportional to 387,390.57, 534,562.26 and 358,825.62 is: 495,145.34
Step by Step Solution
- Step 1: Write the proportion equation
387,390.57 : 534,562.26 = 358,825.62 : x - Step 2: Convert to fraction form
387,390.57/534,562.26 = 358,825.62/x - Step 3: Cross multiply
387,390.57x = 534,562.26 × 358,825.62 - Step 4: Simplify right side
387,390.57x = 191,814,634,373.10 - Step 5: Solve for x
x = 191,814,634,373.10/387,390.57 - Step 6: Final answer
x = 495,145.34
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1.5x scale
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.