Finding the Fourth Proportional to 686,683.24, 947,934.30 and 442,021.12
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Solution
The fourth proportional to 686,683.24, 947,934.30 and 442,021.12 is: 610,189.61
Step by Step Solution
- Step 1: Write the proportion equation
686,683.24 : 947,934.30 = 442,021.12 : x - Step 2: Convert to fraction form
686,683.24/947,934.30 = 442,021.12/x - Step 3: Cross multiply
686,683.24x = 947,934.30 × 442,021.12 - Step 4: Simplify right side
686,683.24x = 419,006,980,972.42 - Step 5: Solve for x
x = 419,006,980,972.42/686,683.24 - Step 6: Final answer
x = 610,189.61
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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.