Finding the Fourth Proportional to 1,289,378.39, 1,779,497.37 and 745,647.80
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Solution
The fourth proportional to 1,289,378.39, 1,779,497.37 and 745,647.80 is: 1,029,083.71
Step by Step Solution
- Step 1: Write the proportion equation
1,289,378.39 : 1,779,497.37 = 745,647.80 : x - Step 2: Convert to fraction form
1,289,378.39/1,779,497.37 = 745,647.80/x - Step 3: Cross multiply
1,289,378.39x = 1,779,497.37 × 745,647.80 - Step 4: Simplify right side
1,289,378.39x = 1,326,878,290,148.80 - Step 5: Solve for x
x = 1,326,878,290,148.80/1,289,378.39 - Step 6: Final answer
x = 1,029,083.71
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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.