Finding the Fourth Proportional to 5,180,943.68, 7,149,748.80 and 2,857,925.12
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Solution
The fourth proportional to 5,180,943.68, 7,149,748.80 and 2,857,925.12 is: 3,943,962.33
Step by Step Solution
- Step 1: Write the proportion equation
5,180,943.68 : 7,149,748.80 = 2,857,925.12 : x - Step 2: Convert to fraction form
5,180,943.68/7,149,748.80 = 2,857,925.12/x - Step 3: Cross multiply
5,180,943.68x = 7,149,748.80 × 2,857,925.12 - Step 4: Simplify right side
5,180,943.68x = 20,433,446,697,209.86 - Step 5: Solve for x
x = 20,433,446,697,209.86/5,180,943.68 - Step 6: Final answer
x = 3,943,962.33
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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.