Finding the Fourth Proportional to 1,126,987.07, 1,690,854.28 and 749,394.09
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Solution
The fourth proportional to 1,126,987.07, 1,690,854.28 and 749,394.09 is: 1,124,339.61
Step by Step Solution
- Step 1: Write the proportion equation
1,126,987.07 : 1,690,854.28 = 749,394.09 : x - Step 2: Convert to fraction form
1,126,987.07/1,690,854.28 = 749,394.09/x - Step 3: Cross multiply
1,126,987.07x = 1,690,854.28 × 749,394.09 - Step 4: Simplify right side
1,126,987.07x = 1,267,116,198,056.71 - Step 5: Solve for x
x = 1,267,116,198,056.71/1,126,987.07 - Step 6: Final answer
x = 1,124,339.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.