Finding the Fourth Proportional to 1,238,079.96, 1,707,824.66 and 778,466.12
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Solution
The fourth proportional to 1,238,079.96, 1,707,824.66 and 778,466.12 is: 1,073,826.95
Step by Step Solution
- Step 1: Write the proportion equation
1,238,079.96 : 1,707,824.66 = 778,466.12 : x - Step 2: Convert to fraction form
1,238,079.96/1,707,824.66 = 778,466.12/x - Step 3: Cross multiply
1,238,079.96x = 1,707,824.66 × 778,466.12 - Step 4: Simplify right side
1,238,079.96x = 1,329,483,624,279.07 - Step 5: Solve for x
x = 1,329,483,624,279.07/1,238,079.96 - Step 6: Final answer
x = 1,073,826.95
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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.