Finding the Fourth Proportional to 1,420,432.12, 1,960,109.04 and 775,721.53
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Solution
The fourth proportional to 1,420,432.12, 1,960,109.04 and 775,721.53 is: 1,070,448.04
Step by Step Solution
- Step 1: Write the proportion equation
1,420,432.12 : 1,960,109.04 = 775,721.53 : x - Step 2: Convert to fraction form
1,420,432.12/1,960,109.04 = 775,721.53/x - Step 3: Cross multiply
1,420,432.12x = 1,960,109.04 × 775,721.53 - Step 4: Simplify right side
1,420,432.12x = 1,520,498,783,475.63 - Step 5: Solve for x
x = 1,520,498,783,475.63/1,420,432.12 - Step 6: Final answer
x = 1,070,448.04
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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.