Finding the Fourth Proportional to 423,106,938.24, 631,811,198.64 and 345,537,721.68
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Solution
The fourth proportional to 423,106,938.24, 631,811,198.64 and 345,537,721.68 is: 515,979,726.11
Step by Step Solution
- Step 1: Write the proportion equation
423,106,938.24 : 631,811,198.64 = 345,537,721.68 : x - Step 2: Convert to fraction form
423,106,938.24/631,811,198.64 = 345,537,721.68/x - Step 3: Cross multiply
423,106,938.24x = 631,811,198.64 × 345,537,721.68 - Step 4: Simplify right side
423,106,938.24x = 218,314,602,109,975,520 - Step 5: Solve for x
x = 218,314,602,109,975,520/423,106,938.24 - Step 6: Final answer
x = 515,979,726.11
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.