Finding the Fourth Proportional to 790,565,778.82, 1,090,980,753.09 and 438,194,709.49
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Solution
The fourth proportional to 790,565,778.82, 1,090,980,753.09 and 438,194,709.49 is: 604,708,687.08
Step by Step Solution
- Step 1: Write the proportion equation
790,565,778.82 : 1,090,980,753.09 = 438,194,709.49 : x - Step 2: Convert to fraction form
790,565,778.82/1,090,980,753.09 = 438,194,709.49/x - Step 3: Cross multiply
790,565,778.82x = 1,090,980,753.09 × 438,194,709.49 - Step 4: Simplify right side
790,565,778.82x = 478,061,994,159,453,952 - Step 5: Solve for x
x = 478,061,994,159,453,952/790,565,778.82 - Step 6: Final answer
x = 604,708,687.08
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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.