Finding the Fourth Proportional to 1,283,421.20, 1,771,121.77 and 702,681.98
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Solution
The fourth proportional to 1,283,421.20, 1,771,121.77 and 702,681.98 is: 969,701.41
Step by Step Solution
- Step 1: Write the proportion equation
1,283,421.20 : 1,771,121.77 = 702,681.98 : x - Step 2: Convert to fraction form
1,283,421.20/1,771,121.77 = 702,681.98/x - Step 3: Cross multiply
1,283,421.20x = 1,771,121.77 × 702,681.98 - Step 4: Simplify right side
1,283,421.20x = 1,244,535,341,552.39 - Step 5: Solve for x
x = 1,244,535,341,552.39/1,283,421.20 - Step 6: Final answer
x = 969,701.41
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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.