Finding the Fourth Proportional to 396,931,173.97, 547,765,470.44 and 220,715,385.79
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Solution
The fourth proportional to 396,931,173.97, 547,765,470.44 and 220,715,385.79 is: 304,587,482.82
Step by Step Solution
- Step 1: Write the proportion equation
396,931,173.97 : 547,765,470.44 = 220,715,385.79 : x - Step 2: Convert to fraction form
396,931,173.97/547,765,470.44 = 220,715,385.79/x - Step 3: Cross multiply
396,931,173.97x = 547,765,470.44 × 220,715,385.79 - Step 4: Simplify right side
396,931,173.97x = 120,900,267,130,605,456 - Step 5: Solve for x
x = 120,900,267,130,605,456/396,931,173.97 - Step 6: Final answer
x = 304,587,482.82
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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.