Finding the Fourth Proportional to 1,421,332.21, 1,961,439.20 and 776,752.31
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Solution
The fourth proportional to 1,421,332.21, 1,961,439.20 and 776,752.31 is: 1,071,918.60
Step by Step Solution
- Step 1: Write the proportion equation
1,421,332.21 : 1,961,439.20 = 776,752.31 : x - Step 2: Convert to fraction form
1,421,332.21/1,961,439.20 = 776,752.31/x - Step 3: Cross multiply
1,421,332.21x = 1,961,439.20 × 776,752.31 - Step 4: Simplify right side
1,421,332.21x = 1,523,552,427,940.66 - Step 5: Solve for x
x = 1,523,552,427,940.66/1,421,332.21 - Step 6: Final answer
x = 1,071,918.60
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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.