Finding the Fourth Proportional to 420,557.74, 580,358.52 and 386,702.98
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Solution
The fourth proportional to 420,557.74, 580,358.52 and 386,702.98 is: 533,639.85
Step by Step Solution
- Step 1: Write the proportion equation
420,557.74 : 580,358.52 = 386,702.98 : x - Step 2: Convert to fraction form
420,557.74/580,358.52 = 386,702.98/x - Step 3: Cross multiply
420,557.74x = 580,358.52 × 386,702.98 - Step 4: Simplify right side
420,557.74x = 224,426,369,152.39 - Step 5: Solve for x
x = 224,426,369,152.39/420,557.74 - Step 6: Final answer
x = 533,639.85
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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.