Finding the Fourth Proportional to 1,163,724.02, 1,605,898.86 and 640,385.85
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Solution
The fourth proportional to 1,163,724.02, 1,605,898.86 and 640,385.85 is: 883,710.31
Step by Step Solution
- Step 1: Write the proportion equation
1,163,724.02 : 1,605,898.86 = 640,385.85 : x - Step 2: Convert to fraction form
1,163,724.02/1,605,898.86 = 640,385.85/x - Step 3: Cross multiply
1,163,724.02x = 1,605,898.86 × 640,385.85 - Step 4: Simplify right side
1,163,724.02x = 1,028,394,906,475.13 - Step 5: Solve for x
x = 1,028,394,906,475.13/1,163,724.02 - Step 6: Final answer
x = 883,710.31
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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.