Finding the Fourth Proportional to 1,343,928.80, 2,013,128.40 and 679,455.20
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Solution
The fourth proportional to 1,343,928.80, 2,013,128.40 and 679,455.20 is: 1,017,784.99
Step by Step Solution
- Step 1: Write the proportion equation
1,343,928.80 : 2,013,128.40 = 679,455.20 : x - Step 2: Convert to fraction form
1,343,928.80/2,013,128.40 = 679,455.20/x - Step 3: Cross multiply
1,343,928.80x = 2,013,128.40 × 679,455.20 - Step 4: Simplify right side
1,343,928.80x = 1,367,830,559,647.68 - Step 5: Solve for x
x = 1,367,830,559,647.68/1,343,928.80 - Step 6: Final answer
x = 1,017,784.99
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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.