Finding the Fourth Proportional to 509,688,963.44, 702,972,252.69 and 331,130,397.09
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Solution
The fourth proportional to 509,688,963.44, 702,972,252.69 and 331,130,397.09 is: 456,701,042.94
Step by Step Solution
- Step 1: Write the proportion equation
509,688,963.44 : 702,972,252.69 = 331,130,397.09 : x - Step 2: Convert to fraction form
509,688,963.44/702,972,252.69 = 331,130,397.09/x - Step 3: Cross multiply
509,688,963.44x = 702,972,252.69 × 331,130,397.09 - Step 4: Simplify right side
509,688,963.44x = 232,775,481,177,885,920 - Step 5: Solve for x
x = 232,775,481,177,885,920/509,688,963.44 - Step 6: Final answer
x = 456,701,042.94
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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.