Finding the Fourth Proportional to 1,212,880,883.13, 1,673,775,621.36 and 655,963,930.13
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Solution
The fourth proportional to 1,212,880,883.13, 1,673,775,621.36 and 655,963,930.13 is: 905,230,225.00
Step by Step Solution
- Step 1: Write the proportion equation
1,212,880,883.13 : 1,673,775,621.36 = 655,963,930.13 : x - Step 2: Convert to fraction form
1,212,880,883.13/1,673,775,621.36 = 655,963,930.13/x - Step 3: Cross multiply
1,212,880,883.13x = 1,673,775,621.36 × 655,963,930.13 - Step 4: Simplify right side
1,212,880,883.13x = 1,097,936,434,734,719,488 - Step 5: Solve for x
x = 1,097,936,434,734,719,488/1,212,880,883.13 - Step 6: Final answer
x = 905,230,225.00
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1.5x scale
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.