Finding the Fourth Proportional to 1,289,720.34, 1,779,808.95 and 708,982.47
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Solution
The fourth proportional to 1,289,720.34, 1,779,808.95 and 708,982.47 is: 978,392.99
Step by Step Solution
- Step 1: Write the proportion equation
1,289,720.34 : 1,779,808.95 = 708,982.47 : x - Step 2: Convert to fraction form
1,289,720.34/1,779,808.95 = 708,982.47/x - Step 3: Cross multiply
1,289,720.34x = 1,779,808.95 × 708,982.47 - Step 4: Simplify right side
1,289,720.34x = 1,261,853,345,499.11 - Step 5: Solve for x
x = 1,261,853,345,499.11/1,289,720.34 - Step 6: Final answer
x = 978,392.99
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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.