Finding the Fourth Proportional to 827,590,449.92, 1,239,980,848.11 and 499,376,279.12
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Solution
The fourth proportional to 827,590,449.92, 1,239,980,848.11 and 499,376,279.12 is: 748,216,732.28
Step by Step Solution
- Step 1: Write the proportion equation
827,590,449.92 : 1,239,980,848.11 = 499,376,279.12 : x - Step 2: Convert to fraction form
827,590,449.92/1,239,980,848.11 = 499,376,279.12/x - Step 3: Cross multiply
827,590,449.92x = 1,239,980,848.11 × 499,376,279.12 - Step 4: Simplify right side
827,590,449.92x = 619,217,022,103,033,728 - Step 5: Solve for x
x = 619,217,022,103,033,728/827,590,449.92 - Step 6: Final answer
x = 748,216,732.28
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Double scale
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1.5x scale
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.