Finding the Fourth Proportional to 665,332.91, 918,168.18 and 378,854.14
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Solution
The fourth proportional to 665,332.91, 918,168.18 and 378,854.14 is: 522,823.70
Step by Step Solution
- Step 1: Write the proportion equation
665,332.91 : 918,168.18 = 378,854.14 : x - Step 2: Convert to fraction form
665,332.91/918,168.18 = 378,854.14/x - Step 3: Cross multiply
665,332.91x = 918,168.18 × 378,854.14 - Step 4: Simplify right side
665,332.91x = 347,851,816,209.27 - Step 5: Solve for x
x = 347,851,816,209.27/665,332.91 - Step 6: Final answer
x = 522,823.70
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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.