Finding the Fourth Proportional to 1,259,318.40, 1,737,897.30 and 686,395.68
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Solution
The fourth proportional to 1,259,318.40, 1,737,897.30 and 686,395.68 is: 947,246.70
Step by Step Solution
- Step 1: Write the proportion equation
1,259,318.40 : 1,737,897.30 = 686,395.68 : x - Step 2: Convert to fraction form
1,259,318.40/1,737,897.30 = 686,395.68/x - Step 3: Cross multiply
1,259,318.40x = 1,737,897.30 × 686,395.68 - Step 4: Simplify right side
1,259,318.40x = 1,192,885,199,003.66 - Step 5: Solve for x
x = 1,192,885,199,003.66/1,259,318.40 - Step 6: Final answer
x = 947,246.70
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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.