Finding the Fourth Proportional to 1,292,065.28, 1,783,108.80 and 719,142.08
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Solution
The fourth proportional to 1,292,065.28, 1,783,108.80 and 719,142.08 is: 992,448.75
Step by Step Solution
- Step 1: Write the proportion equation
1,292,065.28 : 1,783,108.80 = 719,142.08 : x - Step 2: Convert to fraction form
1,292,065.28/1,783,108.80 = 719,142.08/x - Step 3: Cross multiply
1,292,065.28x = 1,783,108.80 × 719,142.08 - Step 4: Simplify right side
1,292,065.28x = 1,282,308,571,298.30 - Step 5: Solve for x
x = 1,282,308,571,298.30/1,292,065.28 - Step 6: Final answer
x = 992,448.75
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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.