Finding the Fourth Proportional to 645,867.24, 891,304.86 and 355,512.36
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Solution
The fourth proportional to 645,867.24, 891,304.86 and 355,512.36 is: 490,611.50
Step by Step Solution
- Step 1: Write the proportion equation
645,867.24 : 891,304.86 = 355,512.36 : x - Step 2: Convert to fraction form
645,867.24/891,304.86 = 355,512.36/x - Step 3: Cross multiply
645,867.24x = 891,304.86 × 355,512.36 - Step 4: Simplify right side
645,867.24x = 316,869,894,258.07 - Step 5: Solve for x
x = 316,869,894,258.07/645,867.24 - Step 6: Final answer
x = 490,611.50
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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.