Finding the Fourth Proportional to 1,399,239,449.08, 1,930,951,172.76 and 764,168,635
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Solution
The fourth proportional to 1,399,239,449.08, 1,930,951,172.76 and 764,168,635 is: 1,054,553,116.63
Step by Step Solution
- Step 1: Write the proportion equation
1,399,239,449.08 : 1,930,951,172.76 = 764,168,635 : x - Step 2: Convert to fraction form
1,399,239,449.08/1,930,951,172.76 = 764,168,635/x - Step 3: Cross multiply
1,399,239,449.08x = 1,930,951,172.76 × 764,168,635 - Step 4: Simplify right side
1,399,239,449.08x = 1,475,572,321,939,658,496 - Step 5: Solve for x
x = 1,475,572,321,939,658,496/1,399,239,449.08 - Step 6: Final answer
x = 1,054,553,116.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.