Finding the Fourth Proportional to 645,461.04, 890,723.58 and 358,974.98
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Solution
The fourth proportional to 645,461.04, 890,723.58 and 358,974.98 is: 495,378.43
Step by Step Solution
- Step 1: Write the proportion equation
645,461.04 : 890,723.58 = 358,974.98 : x - Step 2: Convert to fraction form
645,461.04/890,723.58 = 358,974.98/x - Step 3: Cross multiply
645,461.04x = 890,723.58 × 358,974.98 - Step 4: Simplify right side
645,461.04x = 319,747,474,862.41 - Step 5: Solve for x
x = 319,747,474,862.41/645,461.04 - Step 6: Final answer
x = 495,378.43
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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.