Finding the Fourth Proportional to 2,638,878.24, 3,639,774.25 and 2,421,788.12
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Solution
The fourth proportional to 2,638,878.24, 3,639,774.25 and 2,421,788.12 is: 3,340,344.36
Step by Step Solution
- Step 1: Write the proportion equation
2,638,878.24 : 3,639,774.25 = 2,421,788.12 : x - Step 2: Convert to fraction form
2,638,878.24/3,639,774.25 = 2,421,788.12/x - Step 3: Cross multiply
2,638,878.24x = 3,639,774.25 × 2,421,788.12 - Step 4: Simplify right side
2,638,878.24x = 8,814,762,038,131.91 - Step 5: Solve for x
x = 8,814,762,038,131.91/2,638,878.24 - Step 6: Final answer
x = 3,340,344.36
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1.5x scale
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.