Finding the Fourth Proportional to 640,067.18, 883,319.55 and 368,135.15
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Solution
The fourth proportional to 640,067.18, 883,319.55 and 368,135.15 is: 508,041.94
Step by Step Solution
- Step 1: Write the proportion equation
640,067.18 : 883,319.55 = 368,135.15 : x - Step 2: Convert to fraction form
640,067.18/883,319.55 = 368,135.15/x - Step 3: Cross multiply
640,067.18x = 883,319.55 × 368,135.15 - Step 4: Simplify right side
640,067.18x = 325,180,976,325.14 - Step 5: Solve for x
x = 325,180,976,325.14/640,067.18 - Step 6: Final answer
x = 508,041.94
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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.