Finding the Fourth Proportional to 1,214,264.80, 1,821,397.20 and 859,679.20
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Solution
The fourth proportional to 1,214,264.80, 1,821,397.20 and 859,679.20 is: 1,289,518.80
Step by Step Solution
- Step 1: Write the proportion equation
1,214,264.80 : 1,821,397.20 = 859,679.20 : x - Step 2: Convert to fraction form
1,214,264.80/1,821,397.20 = 859,679.20/x - Step 3: Cross multiply
1,214,264.80x = 1,821,397.20 × 859,679.20 - Step 4: Simplify right side
1,214,264.80x = 1,565,817,287,778.24 - Step 5: Solve for x
x = 1,565,817,287,778.24/1,214,264.80 - Step 6: Final answer
x = 1,289,518.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.