Finding the Fourth Proportional to 640,067.64, 883,318.70 and 368,135.20
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Solution
The fourth proportional to 640,067.64, 883,318.70 and 368,135.20 is: 508,041.16
Step by Step Solution
- Step 1: Write the proportion equation
640,067.64 : 883,318.70 = 368,135.20 : x - Step 2: Convert to fraction form
640,067.64/883,318.70 = 368,135.20/x - Step 3: Cross multiply
640,067.64x = 883,318.70 × 368,135.20 - Step 4: Simplify right side
640,067.64x = 325,180,706,288.24 - Step 5: Solve for x
x = 325,180,706,288.24/640,067.64 - Step 6: Final answer
x = 508,041.16
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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.