Finding the Fourth Proportional to 1,720,909.78, 2,375,356.12 and 1,147,948.58
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Solution
The fourth proportional to 1,720,909.78, 2,375,356.12 and 1,147,948.58 is: 1,584,502.99
Step by Step Solution
- Step 1: Write the proportion equation
1,720,909.78 : 2,375,356.12 = 1,147,948.58 : x - Step 2: Convert to fraction form
1,720,909.78/2,375,356.12 = 1,147,948.58/x - Step 3: Cross multiply
1,720,909.78x = 2,375,356.12 × 1,147,948.58 - Step 4: Simplify right side
1,720,909.78x = 2,726,786,684,948.31 - Step 5: Solve for x
x = 2,726,786,684,948.31/1,720,909.78 - Step 6: Final answer
x = 1,584,502.99
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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.