Finding the Fourth Proportional to 868,688.74, 1,297,091.35 and 778,146.94
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Solution
The fourth proportional to 868,688.74, 1,297,091.35 and 778,146.94 is: 1,161,897.95
Step by Step Solution
- Step 1: Write the proportion equation
868,688.74 : 1,297,091.35 = 778,146.94 : x - Step 2: Convert to fraction form
868,688.74/1,297,091.35 = 778,146.94/x - Step 3: Cross multiply
868,688.74x = 1,297,091.35 × 778,146.94 - Step 4: Simplify right side
868,688.74x = 1,009,327,664,902.97 - Step 5: Solve for x
x = 1,009,327,664,902.97/868,688.74 - Step 6: Final answer
x = 1,161,897.95
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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.