Finding the Fourth Proportional to 1,991,728,416.40, 2,987,592,624.60 and 1,012,176,365.20
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Solution
The fourth proportional to 1,991,728,416.40, 2,987,592,624.60 and 1,012,176,365.20 is: 1,518,264,547.80
Step by Step Solution
- Step 1: Write the proportion equation
1,991,728,416.40 : 2,987,592,624.60 = 1,012,176,365.20 : x - Step 2: Convert to fraction form
1,991,728,416.40/2,987,592,624.60 = 1,012,176,365.20/x - Step 3: Cross multiply
1,991,728,416.40x = 2,987,592,624.60 × 1,012,176,365.20 - Step 4: Simplify right side
1,991,728,416.40x = 3,023,970,643,465,956,352 - Step 5: Solve for x
x = 3,023,970,643,465,956,352/1,991,728,416.40 - Step 6: Final answer
x = 1,518,264,547.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.