Finding the Fourth Proportional to 1,383,513.74, 1,909,251.58 and 771,706.12
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Solution
The fourth proportional to 1,383,513.74, 1,909,251.58 and 771,706.12 is: 1,064,955.91
Step by Step Solution
- Step 1: Write the proportion equation
1,383,513.74 : 1,909,251.58 = 771,706.12 : x - Step 2: Convert to fraction form
1,383,513.74/1,909,251.58 = 771,706.12/x - Step 3: Cross multiply
1,383,513.74x = 1,909,251.58 × 771,706.12 - Step 4: Simplify right side
1,383,513.74x = 1,473,381,128,905.67 - Step 5: Solve for x
x = 1,473,381,128,905.67/1,383,513.74 - Step 6: Final answer
x = 1,064,955.91
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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.