Finding the Fourth Proportional to 2,159,513.14, 2,980,128.09 and 1,254,153.46
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Solution
The fourth proportional to 2,159,513.14, 2,980,128.09 and 1,254,153.46 is: 1,730,731.75
Step by Step Solution
- Step 1: Write the proportion equation
2,159,513.14 : 2,980,128.09 = 1,254,153.46 : x - Step 2: Convert to fraction form
2,159,513.14/2,980,128.09 = 1,254,153.46/x - Step 3: Cross multiply
2,159,513.14x = 2,980,128.09 × 1,254,153.46 - Step 4: Simplify right side
2,159,513.14x = 3,737,537,955,316.69 - Step 5: Solve for x
x = 3,737,537,955,316.69/2,159,513.14 - Step 6: Final answer
x = 1,730,731.75
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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.