Finding the Fourth Proportional to 1,247,571.08, 1,721,658.38 and 688,783.47
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Solution
The fourth proportional to 1,247,571.08, 1,721,658.38 and 688,783.47 is: 950,526.87
Step by Step Solution
- Step 1: Write the proportion equation
1,247,571.08 : 1,721,658.38 = 688,783.47 : x - Step 2: Convert to fraction form
1,247,571.08/1,721,658.38 = 688,783.47/x - Step 3: Cross multiply
1,247,571.08x = 1,721,658.38 × 688,783.47 - Step 4: Simplify right side
1,247,571.08x = 1,185,849,829,687.06 - Step 5: Solve for x
x = 1,185,849,829,687.06/1,247,571.08 - Step 6: Final answer
x = 950,526.87
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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.