Finding the Fourth Proportional to 1,428,267.10, 1,971,070.17 and 855,197.74
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Solution
The fourth proportional to 1,428,267.10, 1,971,070.17 and 855,197.74 is: 1,180,209.75
Step by Step Solution
- Step 1: Write the proportion equation
1,428,267.10 : 1,971,070.17 = 855,197.74 : x - Step 2: Convert to fraction form
1,428,267.10/1,971,070.17 = 855,197.74/x - Step 3: Cross multiply
1,428,267.10x = 1,971,070.17 × 855,197.74 - Step 4: Simplify right side
1,428,267.10x = 1,685,654,754,765.42 - Step 5: Solve for x
x = 1,685,654,754,765.42/1,428,267.10 - Step 6: Final answer
x = 1,180,209.75
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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.