Finding the Fourth Proportional to 1,172,110,307.20, 1,758,417,403.20 and 354,305,276.80
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Solution
The fourth proportional to 1,172,110,307.20, 1,758,417,403.20 and 354,305,276.80 is: 531,534,072.30
Step by Step Solution
- Step 1: Write the proportion equation
1,172,110,307.20 : 1,758,417,403.20 = 354,305,276.80 : x - Step 2: Convert to fraction form
1,172,110,307.20/1,758,417,403.20 = 354,305,276.80/x - Step 3: Cross multiply
1,172,110,307.20x = 1,758,417,403.20 × 354,305,276.80 - Step 4: Simplify right side
1,172,110,307.20x = 623,016,564,770,713,216 - Step 5: Solve for x
x = 623,016,564,770,713,216/1,172,110,307.20 - Step 6: Final answer
x = 531,534,072.30
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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.