Finding the Fourth Proportional to 513,304,379.12, 708,360,231.99 and 278,354,977.32
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Solution
The fourth proportional to 513,304,379.12, 708,360,231.99 and 278,354,977.32 is: 384,129,971.09
Step by Step Solution
- Step 1: Write the proportion equation
513,304,379.12 : 708,360,231.99 = 278,354,977.32 : x - Step 2: Convert to fraction form
513,304,379.12/708,360,231.99 = 278,354,977.32/x - Step 3: Cross multiply
513,304,379.12x = 708,360,231.99 × 278,354,977.32 - Step 4: Simplify right side
513,304,379.12x = 197,175,596,309,966,400 - Step 5: Solve for x
x = 197,175,596,309,966,400/513,304,379.12 - Step 6: Final answer
x = 384,129,971.09
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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.