Finding the Fourth Proportional to 708,208.08, 977,212.80 and 421,720.80
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Solution
The fourth proportional to 708,208.08, 977,212.80 and 421,720.80 is: 581,906.61
Step by Step Solution
- Step 1: Write the proportion equation
708,208.08 : 977,212.80 = 421,720.80 : x - Step 2: Convert to fraction form
708,208.08/977,212.80 = 421,720.80/x - Step 3: Cross multiply
708,208.08x = 977,212.80 × 421,720.80 - Step 4: Simplify right side
708,208.08x = 412,110,963,786.24 - Step 5: Solve for x
x = 412,110,963,786.24/708,208.08 - Step 6: Final answer
x = 581,906.61
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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.