Finding the Fourth Proportional to 1,210,134.10, 1,815,201.15 and 787,119.70
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Solution
The fourth proportional to 1,210,134.10, 1,815,201.15 and 787,119.70 is: 1,180,679.55
Step by Step Solution
- Step 1: Write the proportion equation
1,210,134.10 : 1,815,201.15 = 787,119.70 : x - Step 2: Convert to fraction form
1,210,134.10/1,815,201.15 = 787,119.70/x - Step 3: Cross multiply
1,210,134.10x = 1,815,201.15 × 787,119.70 - Step 4: Simplify right side
1,210,134.10x = 1,428,780,584,627.65 - Step 5: Solve for x
x = 1,428,780,584,627.65/1,210,134.10 - Step 6: Final answer
x = 1,180,679.55
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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.