Finding the Fourth Proportional to 1,931,132.20, 2,664,345.96 and 1,115,228.14
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Solution
The fourth proportional to 1,931,132.20, 2,664,345.96 and 1,115,228.14 is: 1,538,658.82
Step by Step Solution
- Step 1: Write the proportion equation
1,931,132.20 : 2,664,345.96 = 1,115,228.14 : x - Step 2: Convert to fraction form
1,931,132.20/2,664,345.96 = 1,115,228.14/x - Step 3: Cross multiply
1,931,132.20x = 2,664,345.96 × 1,115,228.14 - Step 4: Simplify right side
1,931,132.20x = 2,971,353,589,287.31 - Step 5: Solve for x
x = 2,971,353,589,287.31/1,931,132.20 - Step 6: Final answer
x = 1,538,658.82
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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.