Finding the Fourth Proportional to 1,231,988.38, 1,700,125.77 and 688,132.09
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Solution
The fourth proportional to 1,231,988.38, 1,700,125.77 and 688,132.09 is: 949,612.12
Step by Step Solution
- Step 1: Write the proportion equation
1,231,988.38 : 1,700,125.77 = 688,132.09 : x - Step 2: Convert to fraction form
1,231,988.38/1,700,125.77 = 688,132.09/x - Step 3: Cross multiply
1,231,988.38x = 1,700,125.77 × 688,132.09 - Step 4: Simplify right side
1,231,988.38x = 1,169,911,099,372.96 - Step 5: Solve for x
x = 1,169,911,099,372.96/1,231,988.38 - Step 6: Final answer
x = 949,612.12
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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.