Finding the Fourth Proportional to 1,987,909.09, 2,979,104.90 and 905,777.06
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Solution
The fourth proportional to 1,987,909.09, 2,979,104.90 and 905,777.06 is: 1,357,408.59
Step by Step Solution
- Step 1: Write the proportion equation
1,987,909.09 : 2,979,104.90 = 905,777.06 : x - Step 2: Convert to fraction form
1,987,909.09/2,979,104.90 = 905,777.06/x - Step 3: Cross multiply
1,987,909.09x = 2,979,104.90 × 905,777.06 - Step 4: Simplify right side
1,987,909.09x = 2,698,404,877,753.59 - Step 5: Solve for x
x = 2,698,404,877,753.59/1,987,909.09 - Step 6: Final answer
x = 1,357,408.59
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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.