Finding the Fourth Proportional to 38,387,148.21, 57,580,722.52 and 12,828,157.62
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Solution
The fourth proportional to 38,387,148.21, 57,580,722.52 and 12,828,157.62 is: 19,242,236.49
Step by Step Solution
- Step 1: Write the proportion equation
38,387,148.21 : 57,580,722.52 = 12,828,157.62 : x - Step 2: Convert to fraction form
38,387,148.21/57,580,722.52 = 12,828,157.62/x - Step 3: Cross multiply
38,387,148.21x = 57,580,722.52 × 12,828,157.62 - Step 4: Simplify right side
38,387,148.21x = 738,654,584,112,045.50 - Step 5: Solve for x
x = 738,654,584,112,045.50/38,387,148.21 - Step 6: Final answer
x = 19,242,236.49
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1.5x scale
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.