Finding the Fourth Proportional to 708,544,175.79, 977,791,383.50 and 395,278,390.10
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Solution
The fourth proportional to 708,544,175.79, 977,791,383.50 and 395,278,390.10 is: 545,484,413.16
Step by Step Solution
- Step 1: Write the proportion equation
708,544,175.79 : 977,791,383.50 = 395,278,390.10 : x - Step 2: Convert to fraction form
708,544,175.79/977,791,383.50 = 395,278,390.10/x - Step 3: Cross multiply
708,544,175.79x = 977,791,383.50 × 395,278,390.10 - Step 4: Simplify right side
708,544,175.79x = 386,499,803,922,912,384 - Step 5: Solve for x
x = 386,499,803,922,912,384/708,544,175.79 - Step 6: Final answer
x = 545,484,413.16
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1.5x scale
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.