Finding the Fourth Proportional to 645,530.86, 890,830.21 and 359,050.95
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Solution
The fourth proportional to 645,530.86, 890,830.21 and 359,050.95 is: 495,488.99
Step by Step Solution
- Step 1: Write the proportion equation
645,530.86 : 890,830.21 = 359,050.95 : x - Step 2: Convert to fraction form
645,530.86/890,830.21 = 359,050.95/x - Step 3: Cross multiply
645,530.86x = 890,830.21 × 359,050.95 - Step 4: Simplify right side
645,530.86x = 319,853,433,189.20 - Step 5: Solve for x
x = 319,853,433,189.20/645,530.86 - Step 6: Final answer
x = 495,488.99
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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.