Finding the Fourth Proportional to 5,419,521.38, 8,128,490.72 and 1,580,312.14
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Solution
The fourth proportional to 5,419,521.38, 8,128,490.72 and 1,580,312.14 is: 2,370,237.45
Step by Step Solution
- Step 1: Write the proportion equation
5,419,521.38 : 8,128,490.72 = 1,580,312.14 : x - Step 2: Convert to fraction form
5,419,521.38/8,128,490.72 = 1,580,312.14/x - Step 3: Cross multiply
5,419,521.38x = 8,128,490.72 × 1,580,312.14 - Step 4: Simplify right side
5,419,521.38x = 12,845,552,536,470.55 - Step 5: Solve for x
x = 12,845,552,536,470.55/5,419,521.38 - Step 6: Final answer
x = 2,370,237.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.