Finding the Fourth Proportional to 708,621.21, 977,891.40 and 386,325.45
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Solution
The fourth proportional to 708,621.21, 977,891.40 and 386,325.45 is: 533,125.92
Step by Step Solution
- Step 1: Write the proportion equation
708,621.21 : 977,891.40 = 386,325.45 : x - Step 2: Convert to fraction form
708,621.21/977,891.40 = 386,325.45/x - Step 3: Cross multiply
708,621.21x = 977,891.40 × 386,325.45 - Step 4: Simplify right side
708,621.21x = 377,784,335,156.13 - Step 5: Solve for x
x = 377,784,335,156.13/708,621.21 - Step 6: Final answer
x = 533,125.92
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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.