Finding the Fourth Proportional to 1,021,589.12, 1,409,961.14 and 779,414.10
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Solution
The fourth proportional to 1,021,589.12, 1,409,961.14 and 779,414.10 is: 1,075,719.75
Step by Step Solution
- Step 1: Write the proportion equation
1,021,589.12 : 1,409,961.14 = 779,414.10 : x - Step 2: Convert to fraction form
1,021,589.12/1,409,961.14 = 779,414.10/x - Step 3: Cross multiply
1,021,589.12x = 1,409,961.14 × 779,414.10 - Step 4: Simplify right side
1,021,589.12x = 1,098,943,589,071.00 - Step 5: Solve for x
x = 1,098,943,589,071.00/1,021,589.12 - Step 6: Final answer
x = 1,075,719.75
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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.