Finding the Fourth Proportional to 1,538,141,711.55, 2,307,212,594.05 and 373,602,355.62
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Solution
The fourth proportional to 1,538,141,711.55, 2,307,212,594.05 and 373,602,355.62 is: 560,403,539.92
Step by Step Solution
- Step 1: Write the proportion equation
1,538,141,711.55 : 2,307,212,594.05 = 373,602,355.62 : x - Step 2: Convert to fraction form
1,538,141,711.55/2,307,212,594.05 = 373,602,355.62/x - Step 3: Cross multiply
1,538,141,711.55x = 2,307,212,594.05 × 373,602,355.62 - Step 4: Simplify right side
1,538,141,711.55x = 861,980,060,053,210,880 - Step 5: Solve for x
x = 861,980,060,053,210,880/1,538,141,711.55 - Step 6: Final answer
x = 560,403,539.92
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Double scale
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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.