Finding the Fourth Proportional to 718,348.96, 991,327.98 and 396,070.62
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Solution
The fourth proportional to 718,348.96, 991,327.98 and 396,070.62 is: 546,580.99
Step by Step Solution
- Step 1: Write the proportion equation
718,348.96 : 991,327.98 = 396,070.62 : x - Step 2: Convert to fraction form
718,348.96/991,327.98 = 396,070.62/x - Step 3: Cross multiply
718,348.96x = 991,327.98 × 396,070.62 - Step 4: Simplify right side
718,348.96x = 392,635,887,661.95 - Step 5: Solve for x
x = 392,635,887,661.95/718,348.96 - Step 6: Final answer
x = 546,580.99
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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.