Finding the Fourth Proportional to 451,659.42, 621,725.58 and 390,377.70
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Solution
The fourth proportional to 451,659.42, 621,725.58 and 390,377.70 is: 537,369.07
Step by Step Solution
- Step 1: Write the proportion equation
451,659.42 : 621,725.58 = 390,377.70 : x - Step 2: Convert to fraction form
451,659.42/621,725.58 = 390,377.70/x - Step 3: Cross multiply
451,659.42x = 621,725.58 × 390,377.70 - Step 4: Simplify right side
451,659.42x = 242,707,801,951.57 - Step 5: Solve for x
x = 242,707,801,951.57/451,659.42 - Step 6: Final answer
x = 537,369.07
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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.