Finding the Fourth Proportional to 644,374.24, 889,306.32 and 389,865.76
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Solution
The fourth proportional to 644,374.24, 889,306.32 and 389,865.76 is: 538,057.02
Step by Step Solution
- Step 1: Write the proportion equation
644,374.24 : 889,306.32 = 389,865.76 : x - Step 2: Convert to fraction form
644,374.24/889,306.32 = 389,865.76/x - Step 3: Cross multiply
644,374.24x = 889,306.32 × 389,865.76 - Step 4: Simplify right side
644,374.24x = 346,710,084,319.60 - Step 5: Solve for x
x = 346,710,084,319.60/644,374.24 - Step 6: Final answer
x = 538,057.02
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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.