Finding the Fourth Proportional to 1,680,124,574.40, 2,519,431,034.40 and 644,641,310.40
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Solution
The fourth proportional to 1,680,124,574.40, 2,519,431,034.40 and 644,641,310.40 is: 966,671,964.82
Step by Step Solution
- Step 1: Write the proportion equation
1,680,124,574.40 : 2,519,431,034.40 = 644,641,310.40 : x - Step 2: Convert to fraction form
1,680,124,574.40/2,519,431,034.40 = 644,641,310.40/x - Step 3: Cross multiply
1,680,124,574.40x = 2,519,431,034.40 × 644,641,310.40 - Step 4: Simplify right side
1,680,124,574.40x = 1,624,129,323,478,043,392 - Step 5: Solve for x
x = 1,624,129,323,478,043,392/1,680,124,574.40 - Step 6: Final answer
x = 966,671,964.82
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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.