Finding the Fourth Proportional to 790,565,777.82, 1,090,980,751.71 and 438,194,708.49
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Solution
The fourth proportional to 790,565,777.82, 1,090,980,751.71 and 438,194,708.49 is: 604,708,685.70
Step by Step Solution
- Step 1: Write the proportion equation
790,565,777.82 : 1,090,980,751.71 = 438,194,708.49 : x - Step 2: Convert to fraction form
790,565,777.82/1,090,980,751.71 = 438,194,708.49/x - Step 3: Cross multiply
790,565,777.82x = 1,090,980,751.71 × 438,194,708.49 - Step 4: Simplify right side
790,565,777.82x = 478,061,992,463,764,544 - Step 5: Solve for x
x = 478,061,992,463,764,544/790,565,777.82 - Step 6: Final answer
x = 604,708,685.70
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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.