Finding the Fourth Proportional to 419,877,937.40, 579,431,802.90 and 234,238,953.09
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Solution
The fourth proportional to 419,877,937.40, 579,431,802.90 and 234,238,953.09 is: 323,249,894.34
Step by Step Solution
- Step 1: Write the proportion equation
419,877,937.40 : 579,431,802.90 = 234,238,953.09 : x - Step 2: Convert to fraction form
419,877,937.40/579,431,802.90 = 234,238,953.09/x - Step 3: Cross multiply
419,877,937.40x = 579,431,802.90 × 234,238,953.09 - Step 4: Simplify right side
419,877,937.40x = 135,725,498,898,347,216 - Step 5: Solve for x
x = 135,725,498,898,347,216/419,877,937.40 - Step 6: Final answer
x = 323,249,894.34
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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.