Finding the Fourth Proportional to 1,113,305,768.11, 1,536,319,867.17 and 618,300,363.07
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Solution
The fourth proportional to 1,113,305,768.11, 1,536,319,867.17 and 618,300,363.07 is: 853,231,123.80
Step by Step Solution
- Step 1: Write the proportion equation
1,113,305,768.11 : 1,536,319,867.17 = 618,300,363.07 : x - Step 2: Convert to fraction form
1,113,305,768.11/1,536,319,867.17 = 618,300,363.07/x - Step 3: Cross multiply
1,113,305,768.11x = 1,536,319,867.17 × 618,300,363.07 - Step 4: Simplify right side
1,113,305,768.11x = 949,907,131,662,865,280 - Step 5: Solve for x
x = 949,907,131,662,865,280/1,113,305,768.11 - Step 6: Final answer
x = 853,231,123.80
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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.