Finding the Fourth Proportional to 7,920,070.12, 10,929,701.25 and 4,298,398.12
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Solution
The fourth proportional to 7,920,070.12, 10,929,701.25 and 4,298,398.12 is: 5,931,791.84
Step by Step Solution
- Step 1: Write the proportion equation
7,920,070.12 : 10,929,701.25 = 4,298,398.12 : x - Step 2: Convert to fraction form
7,920,070.12/10,929,701.25 = 4,298,398.12/x - Step 3: Cross multiply
7,920,070.12x = 10,929,701.25 × 4,298,398.12 - Step 4: Simplify right side
7,920,070.12x = 46,980,207,305,161.65 - Step 5: Solve for x
x = 46,980,207,305,161.65/7,920,070.12 - Step 6: Final answer
x = 5,931,791.84
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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.