Finding the Fourth Proportional to 1,278,490,092.60, 1,917,735,138.90 and 589,742,556.60
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Solution
The fourth proportional to 1,278,490,092.60, 1,917,735,138.90 and 589,742,556.60 is: 884,613,834.90
Step by Step Solution
- Step 1: Write the proportion equation
1,278,490,092.60 : 1,917,735,138.90 = 589,742,556.60 : x - Step 2: Convert to fraction form
1,278,490,092.60/1,917,735,138.90 = 589,742,556.60/x - Step 3: Cross multiply
1,278,490,092.60x = 1,917,735,138.90 × 589,742,556.60 - Step 4: Simplify right side
1,278,490,092.60x = 1,130,970,023,696,542,208 - Step 5: Solve for x
x = 1,130,970,023,696,542,208/1,278,490,092.60 - Step 6: Final answer
x = 884,613,834.90
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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.