Finding the Fourth Proportional to 1,911,673,880.79, 2,637,759,748.08 and 1,064,880,130.11
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Solution
The fourth proportional to 1,911,673,880.79, 2,637,759,748.08 and 1,064,880,130.11 is: 1,469,339,499.78
Step by Step Solution
- Step 1: Write the proportion equation
1,911,673,880.79 : 2,637,759,748.08 = 1,064,880,130.11 : x - Step 2: Convert to fraction form
1,911,673,880.79/2,637,759,748.08 = 1,064,880,130.11/x - Step 3: Cross multiply
1,911,673,880.79x = 2,637,759,748.08 × 1,064,880,130.11 - Step 4: Simplify right side
1,911,673,880.79x = 2,808,897,943,728,531,968 - Step 5: Solve for x
x = 2,808,897,943,728,531,968/1,911,673,880.79 - Step 6: Final answer
x = 1,469,339,499.78
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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.