Finding the Fourth Proportional to 640,641.24, 884,017.26 and 354,115.08
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Solution
The fourth proportional to 640,641.24, 884,017.26 and 354,115.08 is: 488,641.42
Step by Step Solution
- Step 1: Write the proportion equation
640,641.24 : 884,017.26 = 354,115.08 : x - Step 2: Convert to fraction form
640,641.24/884,017.26 = 354,115.08/x - Step 3: Cross multiply
640,641.24x = 884,017.26 × 354,115.08 - Step 4: Simplify right side
640,641.24x = 313,043,842,746.28 - Step 5: Solve for x
x = 313,043,842,746.28/640,641.24 - Step 6: Final answer
x = 488,641.42
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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.