Finding the Fourth Proportional to 640,678,269.48, 884,142,970.84 and 376,371,402.54
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Solution
The fourth proportional to 640,678,269.48, 884,142,970.84 and 376,371,402.54 is: 519,396,623.60
Step by Step Solution
- Step 1: Write the proportion equation
640,678,269.48 : 884,142,970.84 = 376,371,402.54 : x - Step 2: Convert to fraction form
640,678,269.48/884,142,970.84 = 376,371,402.54/x - Step 3: Cross multiply
640,678,269.48x = 884,142,970.84 × 376,371,402.54 - Step 4: Simplify right side
640,678,269.48x = 332,766,129,980,933,184 - Step 5: Solve for x
x = 332,766,129,980,933,184/640,678,269.48 - Step 6: Final answer
x = 519,396,623.60
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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.