Finding the Fourth Proportional to 1,210,705.91, 1,815,810.99 and 452,407.40
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Solution
The fourth proportional to 1,210,705.91, 1,815,810.99 and 452,407.40 is: 678,518.47
Step by Step Solution
- Step 1: Write the proportion equation
1,210,705.91 : 1,815,810.99 = 452,407.40 : x - Step 2: Convert to fraction form
1,210,705.91/1,815,810.99 = 452,407.40/x - Step 3: Cross multiply
1,210,705.91x = 1,815,810.99 × 452,407.40 - Step 4: Simplify right side
1,210,705.91x = 821,486,320,929.29 - Step 5: Solve for x
x = 821,486,320,929.29/1,210,705.91 - Step 6: Final answer
x = 678,518.47
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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.