Finding the Fourth Proportional to 1,354,115.68, 1,868,633.76 and 781,141.12
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Solution
The fourth proportional to 1,354,115.68, 1,868,633.76 and 781,141.12 is: 1,077,948.28
Step by Step Solution
- Step 1: Write the proportion equation
1,354,115.68 : 1,868,633.76 = 781,141.12 : x - Step 2: Convert to fraction form
1,354,115.68/1,868,633.76 = 781,141.12/x - Step 3: Cross multiply
1,354,115.68x = 1,868,633.76 × 781,141.12 - Step 4: Simplify right side
1,354,115.68x = 1,459,666,668,156.21 - Step 5: Solve for x
x = 1,459,666,668,156.21/1,354,115.68 - Step 6: Final answer
x = 1,077,948.28
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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.