Finding the Fourth Proportional to 1,261,340.13, 1,740,420.20 and 745,178.06
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Solution
The fourth proportional to 1,261,340.13, 1,740,420.20 and 745,178.06 is: 1,028,210.32
Step by Step Solution
- Step 1: Write the proportion equation
1,261,340.13 : 1,740,420.20 = 745,178.06 : x - Step 2: Convert to fraction form
1,261,340.13/1,740,420.20 = 745,178.06/x - Step 3: Cross multiply
1,261,340.13x = 1,740,420.20 × 745,178.06 - Step 4: Simplify right side
1,261,340.13x = 1,296,922,935,792.82 - Step 5: Solve for x
x = 1,296,922,935,792.82/1,261,340.13 - Step 6: Final answer
x = 1,028,210.32
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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.