Finding the Fourth Proportional to 868,687.74, 1,297,089.86 and 778,145.94
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Solution
The fourth proportional to 868,687.74, 1,297,089.86 and 778,145.94 is: 1,161,896.45
Step by Step Solution
- Step 1: Write the proportion equation
868,687.74 : 1,297,089.86 = 778,145.94 : x - Step 2: Convert to fraction form
868,687.74/1,297,089.86 = 778,145.94/x - Step 3: Cross multiply
868,687.74x = 1,297,089.86 × 778,145.94 - Step 4: Simplify right side
868,687.74x = 1,009,325,204,483.44 - Step 5: Solve for x
x = 1,009,325,204,483.44/868,687.74 - Step 6: Final answer
x = 1,161,896.45
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.