Finding the Fourth Proportional to 1,426,026.38, 1,967,916.42 and 781,471.94
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Solution
The fourth proportional to 1,426,026.38, 1,967,916.42 and 781,471.94 is: 1,078,431.28
Step by Step Solution
- Step 1: Write the proportion equation
1,426,026.38 : 1,967,916.42 = 781,471.94 : x - Step 2: Convert to fraction form
1,426,026.38/1,967,916.42 = 781,471.94/x - Step 3: Cross multiply
1,426,026.38x = 1,967,916.42 × 781,471.94 - Step 4: Simplify right side
1,426,026.38x = 1,537,871,452,655.67 - Step 5: Solve for x
x = 1,537,871,452,655.67/1,426,026.38 - Step 6: Final answer
x = 1,078,431.28
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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.