Finding the Fourth Proportional to 708,209.08, 977,214.18 and 421,721.80
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Solution
The fourth proportional to 708,209.08, 977,214.18 and 421,721.80 is: 581,907.99
Step by Step Solution
- Step 1: Write the proportion equation
708,209.08 : 977,214.18 = 421,721.80 : x - Step 2: Convert to fraction form
708,209.08/977,214.18 = 421,721.80/x - Step 3: Cross multiply
708,209.08x = 977,214.18 × 421,721.80 - Step 4: Simplify right side
708,209.08x = 412,112,522,975.12 - Step 5: Solve for x
x = 412,112,522,975.12/708,209.08 - Step 6: Final answer
x = 581,907.99
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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.