Finding the Fourth Proportional to 13,135,739.78, 19,705,490.09 and 4,038,601.20
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Solution
The fourth proportional to 13,135,739.78, 19,705,490.09 and 4,038,601.20 is: 6,058,479.94
Step by Step Solution
- Step 1: Write the proportion equation
13,135,739.78 : 19,705,490.09 = 4,038,601.20 : x - Step 2: Convert to fraction form
13,135,739.78/19,705,490.09 = 4,038,601.20/x - Step 3: Cross multiply
13,135,739.78x = 19,705,490.09 × 4,038,601.20 - Step 4: Simplify right side
13,135,739.78x = 79,582,615,934,158.62 - Step 5: Solve for x
x = 79,582,615,934,158.62/13,135,739.78 - Step 6: Final answer
x = 6,058,479.94
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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.