Finding the Fourth Proportional to 1,038,318,655.11, 1,432,879,813.95 and 568,419,976.08
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Solution
The fourth proportional to 1,038,318,655.11, 1,432,879,813.95 and 568,419,976.08 is: 784,419,605.26
Step by Step Solution
- Step 1: Write the proportion equation
1,038,318,655.11 : 1,432,879,813.95 = 568,419,976.08 : x - Step 2: Convert to fraction form
1,038,318,655.11/1,432,879,813.95 = 568,419,976.08/x - Step 3: Cross multiply
1,038,318,655.11x = 1,432,879,813.95 × 568,419,976.08 - Step 4: Simplify right side
1,038,318,655.11x = 814,477,509,570,973,952 - Step 5: Solve for x
x = 814,477,509,570,973,952/1,038,318,655.11 - Step 6: Final answer
x = 784,419,605.26
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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.