Finding the Fourth Proportional to 1,387,430.40, 2,080,300.80 and 544,972.80
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Solution
The fourth proportional to 1,387,430.40, 2,080,300.80 and 544,972.80 is: 817,127.37
Step by Step Solution
- Step 1: Write the proportion equation
1,387,430.40 : 2,080,300.80 = 544,972.80 : x - Step 2: Convert to fraction form
1,387,430.40/2,080,300.80 = 544,972.80/x - Step 3: Cross multiply
1,387,430.40x = 2,080,300.80 × 544,972.80 - Step 4: Simplify right side
1,387,430.40x = 1,133,707,351,818.24 - Step 5: Solve for x
x = 1,133,707,351,818.24/1,387,430.40 - Step 6: Final answer
x = 817,127.37
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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.