Finding the Fourth Proportional to 1,681,585,572.78, 2,320,543,130.85 and 928,882,548.19
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Solution
The fourth proportional to 1,681,585,572.78, 2,320,543,130.85 and 928,882,548.19 is: 1,281,833,081.50
Step by Step Solution
- Step 1: Write the proportion equation
1,681,585,572.78 : 2,320,543,130.85 = 928,882,548.19 : x - Step 2: Convert to fraction form
1,681,585,572.78/2,320,543,130.85 = 928,882,548.19/x - Step 3: Cross multiply
1,681,585,572.78x = 2,320,543,130.85 × 928,882,548.19 - Step 4: Simplify right side
1,681,585,572.78x = 2,155,512,016,568,748,544 - Step 5: Solve for x
x = 2,155,512,016,568,748,544/1,681,585,572.78 - Step 6: Final answer
x = 1,281,833,081.50
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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.