Finding the Fourth Proportional to 1,386,612.20, 2,080,220.70 and 787,860.20
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Solution
The fourth proportional to 1,386,612.20, 2,080,220.70 and 787,860.20 is: 1,181,962.12
Step by Step Solution
- Step 1: Write the proportion equation
1,386,612.20 : 2,080,220.70 = 787,860.20 : x - Step 2: Convert to fraction form
1,386,612.20/2,080,220.70 = 787,860.20/x - Step 3: Cross multiply
1,386,612.20x = 2,080,220.70 × 787,860.20 - Step 4: Simplify right side
1,386,612.20x = 1,638,923,096,746.14 - Step 5: Solve for x
x = 1,638,923,096,746.14/1,386,612.20 - Step 6: Final answer
x = 1,181,962.12
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.