Finding the Fourth Proportional to 1,707,390.20, 2,555,555.70 and 1,209,726.20
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Solution
The fourth proportional to 1,707,390.20, 2,555,555.70 and 1,209,726.20 is: 1,810,671.45
Step by Step Solution
- Step 1: Write the proportion equation
1,707,390.20 : 2,555,555.70 = 1,209,726.20 : x - Step 2: Convert to fraction form
1,707,390.20/2,555,555.70 = 1,209,726.20/x - Step 3: Cross multiply
1,707,390.20x = 2,555,555.70 × 1,209,726.20 - Step 4: Simplify right side
1,707,390.20x = 3,091,522,685,849.34 - Step 5: Solve for x
x = 3,091,522,685,849.34/1,707,390.20 - Step 6: Final answer
x = 1,810,671.45
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1.5x scale
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.