Finding the Fourth Proportional to 447,888,579.14, 618,351,373.86 and 398,191,686.20
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Solution
The fourth proportional to 447,888,579.14, 618,351,373.86 and 398,191,686.20 is: 549,740,242.75
Step by Step Solution
- Step 1: Write the proportion equation
447,888,579.14 : 618,351,373.86 = 398,191,686.20 : x - Step 2: Convert to fraction form
447,888,579.14/618,351,373.86 = 398,191,686.20/x - Step 3: Cross multiply
447,888,579.14x = 618,351,373.86 × 398,191,686.20 - Step 4: Simplify right side
447,888,579.14x = 246,222,376,221,400,000 - Step 5: Solve for x
x = 246,222,376,221,400,000/447,888,579.14 - Step 6: Final answer
x = 549,740,242.75
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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.