Finding the Fourth Proportional to 1,310,421.23, 1,808,455.73 and 787,291.84
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Solution
The fourth proportional to 1,310,421.23, 1,808,455.73 and 787,291.84 is: 1,086,507.46
Step by Step Solution
- Step 1: Write the proportion equation
1,310,421.23 : 1,808,455.73 = 787,291.84 : x - Step 2: Convert to fraction form
1,310,421.23/1,808,455.73 = 787,291.84/x - Step 3: Cross multiply
1,310,421.23x = 1,808,455.73 × 787,291.84 - Step 4: Simplify right side
1,310,421.23x = 1,423,782,439,230.24 - Step 5: Solve for x
x = 1,423,782,439,230.24/1,310,421.23 - Step 6: Final answer
x = 1,086,507.46
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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.