Finding the Fourth Proportional to 644,983.62, 890,005.07 and 386,871.08
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Solution
The fourth proportional to 644,983.62, 890,005.07 and 386,871.08 is: 533,838.70
Step by Step Solution
- Step 1: Write the proportion equation
644,983.62 : 890,005.07 = 386,871.08 : x - Step 2: Convert to fraction form
644,983.62/890,005.07 = 386,871.08/x - Step 3: Cross multiply
644,983.62x = 890,005.07 × 386,871.08 - Step 4: Simplify right side
644,983.62x = 344,317,216,252.00 - Step 5: Solve for x
x = 344,317,216,252.00/644,983.62 - Step 6: Final answer
x = 533,838.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.