Finding the Fourth Proportional to 1,243,354,291.26, 1,865,005,825.77 and 414,368,135.34
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Solution
The fourth proportional to 1,243,354,291.26, 1,865,005,825.77 and 414,368,135.34 is: 621,543,667.69
Step by Step Solution
- Step 1: Write the proportion equation
1,243,354,291.26 : 1,865,005,825.77 = 414,368,135.34 : x - Step 2: Convert to fraction form
1,243,354,291.26/1,865,005,825.77 = 414,368,135.34/x - Step 3: Cross multiply
1,243,354,291.26x = 1,865,005,825.77 × 414,368,135.34 - Step 4: Simplify right side
1,243,354,291.26x = 772,798,986,422,551,808 - Step 5: Solve for x
x = 772,798,986,422,551,808/1,243,354,291.26 - Step 6: Final answer
x = 621,543,667.69
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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.