Finding the Fourth Proportional to 1,505,992,699.80, 2,259,119,176.20 and 415,475,767.80
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Solution
The fourth proportional to 1,505,992,699.80, 2,259,119,176.20 and 415,475,767.80 is: 623,249,551.21
Step by Step Solution
- Step 1: Write the proportion equation
1,505,992,699.80 : 2,259,119,176.20 = 415,475,767.80 : x - Step 2: Convert to fraction form
1,505,992,699.80/2,259,119,176.20 = 415,475,767.80/x - Step 3: Cross multiply
1,505,992,699.80x = 2,259,119,176.20 × 415,475,767.80 - Step 4: Simplify right side
1,505,992,699.80x = 938,609,274,283,398,400 - Step 5: Solve for x
x = 938,609,274,283,398,400/1,505,992,699.80 - Step 6: Final answer
x = 623,249,551.21
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1.5x scale
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.