Finding the Fourth Proportional to 2,155,201,811.70, 3,232,802,717.55 and 1,638,641,159.70
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Solution
The fourth proportional to 2,155,201,811.70, 3,232,802,717.55 and 1,638,641,159.70 is: 2,457,961,739.55
Step by Step Solution
- Step 1: Write the proportion equation
2,155,201,811.70 : 3,232,802,717.55 = 1,638,641,159.70 : x - Step 2: Convert to fraction form
2,155,201,811.70/3,232,802,717.55 = 1,638,641,159.70/x - Step 3: Cross multiply
2,155,201,811.70x = 3,232,802,717.55 × 1,638,641,159.70 - Step 4: Simplify right side
2,155,201,811.70x = 5,297,403,594,167,444,480 - Step 5: Solve for x
x = 5,297,403,594,167,444,480/2,155,201,811.70 - Step 6: Final answer
x = 2,457,961,739.55
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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.