Finding the Fourth Proportional to 1,129,727.86, 1,559,060.36 and 620,430.23
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Solution
The fourth proportional to 1,129,727.86, 1,559,060.36 and 620,430.23 is: 856,213.45
Step by Step Solution
- Step 1: Write the proportion equation
1,129,727.86 : 1,559,060.36 = 620,430.23 : x - Step 2: Convert to fraction form
1,129,727.86/1,559,060.36 = 620,430.23/x - Step 3: Cross multiply
1,129,727.86x = 1,559,060.36 × 620,430.23 - Step 4: Simplify right side
1,129,727.86x = 967,288,180,860.80 - Step 5: Solve for x
x = 967,288,180,860.80/1,129,727.86 - Step 6: Final answer
x = 856,213.45
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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.