Finding the Fourth Proportional to 1,488,865,165.20, 2,233,381,728.60 and 453,759,814.80
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Solution
The fourth proportional to 1,488,865,165.20, 2,233,381,728.60 and 453,759,814.80 is: 680,665,316.94
Step by Step Solution
- Step 1: Write the proportion equation
1,488,865,165.20 : 2,233,381,728.60 = 453,759,814.80 : x - Step 2: Convert to fraction form
1,488,865,165.20/2,233,381,728.60 = 453,759,814.80/x - Step 3: Cross multiply
1,488,865,165.20x = 2,233,381,728.60 × 453,759,814.80 - Step 4: Simplify right side
1,488,865,165.20x = 1,013,418,879,547,239,808 - Step 5: Solve for x
x = 1,013,418,879,547,239,808/1,488,865,165.20 - Step 6: Final answer
x = 680,665,316.94
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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.