Finding the Fourth Proportional to 825,702,918.90, 1,238,554,378.35 and 458,370,899.70
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Solution
The fourth proportional to 825,702,918.90, 1,238,554,378.35 and 458,370,899.70 is: 687,556,349.55
Step by Step Solution
- Step 1: Write the proportion equation
825,702,918.90 : 1,238,554,378.35 = 458,370,899.70 : x - Step 2: Convert to fraction form
825,702,918.90/1,238,554,378.35 = 458,370,899.70/x - Step 3: Cross multiply
825,702,918.90x = 1,238,554,378.35 × 458,370,899.70 - Step 4: Simplify right side
825,702,918.90x = 567,717,284,731,663,616 - Step 5: Solve for x
x = 567,717,284,731,663,616/825,702,918.90 - Step 6: Final answer
x = 687,556,349.55
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Double scale
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Similar ratio
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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.