Finding the Fourth Proportional to 687,750,821.85, 949,092,091.58 and 374,484,285.75
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Solution
The fourth proportional to 687,750,821.85, 949,092,091.58 and 374,484,285.75 is: 516,786,113.13
Step by Step Solution
- Step 1: Write the proportion equation
687,750,821.85 : 949,092,091.58 = 374,484,285.75 : x - Step 2: Convert to fraction form
687,750,821.85/949,092,091.58 = 374,484,285.75/x - Step 3: Cross multiply
687,750,821.85x = 949,092,091.58 × 374,484,285.75 - Step 4: Simplify right side
687,750,821.85x = 355,420,074,024,437,504 - Step 5: Solve for x
x = 355,420,074,024,437,504/687,750,821.85 - Step 6: Final answer
x = 516,786,113.13
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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.