Finding the Fourth Proportional to 1,290,657.92, 1,781,151.14 and 709,905.62
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Solution
The fourth proportional to 1,290,657.92, 1,781,151.14 and 709,905.62 is: 979,693.52
Step by Step Solution
- Step 1: Write the proportion equation
1,290,657.92 : 1,781,151.14 = 709,905.62 : x - Step 2: Convert to fraction form
1,290,657.92/1,781,151.14 = 709,905.62/x - Step 3: Cross multiply
1,290,657.92x = 1,781,151.14 × 709,905.62 - Step 4: Simplify right side
1,290,657.92x = 1,264,449,204,355.41 - Step 5: Solve for x
x = 1,264,449,204,355.41/1,290,657.92 - Step 6: Final answer
x = 979,693.52
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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.