Finding the Fourth Proportional to 1,310,416.48, 1,808,449.17 and 787,287.09
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Solution
The fourth proportional to 1,310,416.48, 1,808,449.17 and 787,287.09 is: 1,086,500.90
Step by Step Solution
- Step 1: Write the proportion equation
1,310,416.48 : 1,808,449.17 = 787,287.09 : x - Step 2: Convert to fraction form
1,310,416.48/1,808,449.17 = 787,287.09/x - Step 3: Cross multiply
1,310,416.48x = 1,808,449.17 × 787,287.09 - Step 4: Simplify right side
1,310,416.48x = 1,423,768,684,462.22 - Step 5: Solve for x
x = 1,423,768,684,462.22/1,310,416.48 - Step 6: Final answer
x = 1,086,500.90
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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.