Finding the Fourth Proportional to 3,781,444.12, 5,220,319.26 and 2,920,070.68
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Solution
The fourth proportional to 3,781,444.12, 5,220,319.26 and 2,920,070.68 is: 4,031,185.10
Step by Step Solution
- Step 1: Write the proportion equation
3,781,444.12 : 5,220,319.26 = 2,920,070.68 : x - Step 2: Convert to fraction form
3,781,444.12/5,220,319.26 = 2,920,070.68/x - Step 3: Cross multiply
3,781,444.12x = 5,220,319.26 × 2,920,070.68 - Step 4: Simplify right side
3,781,444.12x = 15,243,701,211,365.30 - Step 5: Solve for x
x = 15,243,701,211,365.30/3,781,444.12 - Step 6: Final answer
x = 4,031,185.10
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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.