Finding the Fourth Proportional to 399,178,689.40, 598,768,034.10 and 245,325,863.80
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Solution
The fourth proportional to 399,178,689.40, 598,768,034.10 and 245,325,863.80 is: 367,988,795.70
Step by Step Solution
- Step 1: Write the proportion equation
399,178,689.40 : 598,768,034.10 = 245,325,863.80 : x - Step 2: Convert to fraction form
399,178,689.40/598,768,034.10 = 245,325,863.80/x - Step 3: Cross multiply
399,178,689.40x = 598,768,034.10 × 245,325,863.80 - Step 4: Simplify right side
399,178,689.40x = 146,893,285,181,410,368 - Step 5: Solve for x
x = 146,893,285,181,410,368/399,178,689.40 - Step 6: Final answer
x = 367,988,795.70
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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.