Finding the Fourth Proportional to 1,285,279,987.68, 1,773,723,798 and 728,344,516.32
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Solution
The fourth proportional to 1,285,279,987.68, 1,773,723,798 and 728,344,516.32 is: 1,005,136,634.91
Step by Step Solution
- Step 1: Write the proportion equation
1,285,279,987.68 : 1,773,723,798 = 728,344,516.32 : x - Step 2: Convert to fraction form
1,285,279,987.68/1,773,723,798 = 728,344,516.32/x - Step 3: Cross multiply
1,285,279,987.68x = 1,773,723,798 × 728,344,516.32 - Step 4: Simplify right side
1,285,279,987.68x = 1,291,882,001,739,583,488 - Step 5: Solve for x
x = 1,291,882,001,739,583,488/1,285,279,987.68 - Step 6: Final answer
x = 1,005,136,634.91
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1.5x scale
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.