Finding the Fourth Proportional to 754,023,643.80, 1,131,035,465.70 and 208,765,177.80
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Solution
The fourth proportional to 754,023,643.80, 1,131,035,465.70 and 208,765,177.80 is: 313,147,766.70
Step by Step Solution
- Step 1: Write the proportion equation
754,023,643.80 : 1,131,035,465.70 = 208,765,177.80 : x - Step 2: Convert to fraction form
754,023,643.80/1,131,035,465.70 = 208,765,177.80/x - Step 3: Cross multiply
754,023,643.80x = 1,131,035,465.70 × 208,765,177.80 - Step 4: Simplify right side
754,023,643.80x = 236,120,820,094,966,336 - Step 5: Solve for x
x = 236,120,820,094,966,336/754,023,643.80 - Step 6: Final answer
x = 313,147,766.70
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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.