Finding the Fourth Proportional to 3,078,165.84, 4,247,862.12 and 1,720,038.84
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Solution
The fourth proportional to 3,078,165.84, 4,247,862.12 and 1,720,038.84 is: 2,373,649.83
Step by Step Solution
- Step 1: Write the proportion equation
3,078,165.84 : 4,247,862.12 = 1,720,038.84 : x - Step 2: Convert to fraction form
3,078,165.84/4,247,862.12 = 1,720,038.84/x - Step 3: Cross multiply
3,078,165.84x = 4,247,862.12 × 1,720,038.84 - Step 4: Simplify right side
3,078,165.84x = 7,306,487,833,364.74 - Step 5: Solve for x
x = 7,306,487,833,364.74/3,078,165.84 - Step 6: Final answer
x = 2,373,649.83
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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.