Finding the Fourth Proportional to 656,937,480.60, 906,615,806.94 and 378,473,943.96
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Solution
The fourth proportional to 656,937,480.60, 906,615,806.94 and 378,473,943.96 is: 522,318,287.88
Step by Step Solution
- Step 1: Write the proportion equation
656,937,480.60 : 906,615,806.94 = 378,473,943.96 : x - Step 2: Convert to fraction form
656,937,480.60/906,615,806.94 = 378,473,943.96/x - Step 3: Cross multiply
656,937,480.60x = 906,615,806.94 × 378,473,943.96 - Step 4: Simplify right side
656,937,480.60x = 343,130,460,109,059,712 - Step 5: Solve for x
x = 343,130,460,109,059,712/656,937,480.60 - Step 6: Final answer
x = 522,318,287.88
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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.