Finding the Fourth Proportional to 781,730.28, 1,078,777.49 and 442,198.53
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Solution
The fourth proportional to 781,730.28, 1,078,777.49 and 442,198.53 is: 610,228.14
Step by Step Solution
- Step 1: Write the proportion equation
781,730.28 : 1,078,777.49 = 442,198.53 : x - Step 2: Convert to fraction form
781,730.28/1,078,777.49 = 442,198.53/x - Step 3: Cross multiply
781,730.28x = 1,078,777.49 × 442,198.53 - Step 4: Simplify right side
781,730.28x = 477,033,818,064.10 - Step 5: Solve for x
x = 477,033,818,064.10/781,730.28 - Step 6: Final answer
x = 610,228.14
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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.