Finding the Fourth Proportional to 1,257,759,726.36, 1,735,685,173.26 and 685,547,709.72
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Solution
The fourth proportional to 1,257,759,726.36, 1,735,685,173.26 and 685,547,709.72 is: 946,043,167.38
Step by Step Solution
- Step 1: Write the proportion equation
1,257,759,726.36 : 1,735,685,173.26 = 685,547,709.72 : x - Step 2: Convert to fraction form
1,257,759,726.36/1,735,685,173.26 = 685,547,709.72/x - Step 3: Cross multiply
1,257,759,726.36x = 1,735,685,173.26 × 685,547,709.72 - Step 4: Simplify right side
1,257,759,726.36x = 1,189,894,995,323,354,368 - Step 5: Solve for x
x = 1,189,894,995,323,354,368/1,257,759,726.36 - Step 6: Final answer
x = 946,043,167.38
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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.