Finding the Fourth Proportional to 1,172,177.80, 1,758,266.70 and 778,193.80
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Solution
The fourth proportional to 1,172,177.80, 1,758,266.70 and 778,193.80 is: 1,167,290.70
Step by Step Solution
- Step 1: Write the proportion equation
1,172,177.80 : 1,758,266.70 = 778,193.80 : x - Step 2: Convert to fraction form
1,172,177.80/1,758,266.70 = 778,193.80/x - Step 3: Cross multiply
1,172,177.80x = 1,758,266.70 × 778,193.80 - Step 4: Simplify right side
1,172,177.80x = 1,368,272,244,686.46 - Step 5: Solve for x
x = 1,368,272,244,686.46/1,172,177.80 - Step 6: Final answer
x = 1,167,290.70
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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.