Finding the Fourth Proportional to 1,383,720.68, 1,909,461.66 and 771,937.40
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Solution
The fourth proportional to 1,383,720.68, 1,909,461.66 and 771,937.40 is: 1,065,232.96
Step by Step Solution
- Step 1: Write the proportion equation
1,383,720.68 : 1,909,461.66 = 771,937.40 : x - Step 2: Convert to fraction form
1,383,720.68/1,909,461.66 = 771,937.40/x - Step 3: Cross multiply
1,383,720.68x = 1,909,461.66 × 771,937.40 - Step 4: Simplify right side
1,383,720.68x = 1,473,984,869,220.08 - Step 5: Solve for x
x = 1,473,984,869,220.08/1,383,720.68 - Step 6: Final answer
x = 1,065,232.96
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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.