Finding the Fourth Proportional to 6,438,544,072.70, 9,657,816,109.05 and 5,275,326,011.90
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Solution
The fourth proportional to 6,438,544,072.70, 9,657,816,109.05 and 5,275,326,011.90 is: 7,912,989,017.85
Step by Step Solution
- Step 1: Write the proportion equation
6,438,544,072.70 : 9,657,816,109.05 = 5,275,326,011.90 : x - Step 2: Convert to fraction form
6,438,544,072.70/9,657,816,109.05 = 5,275,326,011.90/x - Step 3: Cross multiply
6,438,544,072.70x = 9,657,816,109.05 × 5,275,326,011.90 - Step 4: Simplify right side
6,438,544,072.70x = 50,948,128,538,218,307,584 - Step 5: Solve for x
x = 50,948,128,538,218,307,584/6,438,544,072.70 - Step 6: Final answer
x = 7,912,989,017.85
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1.5x scale
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.