Finding the Fourth Proportional to 984,514,660.11, 1,358,575,279.38 and 538,389,988.11
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Solution
The fourth proportional to 984,514,660.11, 1,358,575,279.38 and 538,389,988.11 is: 742,948,132.87
Step by Step Solution
- Step 1: Write the proportion equation
984,514,660.11 : 1,358,575,279.38 = 538,389,988.11 : x - Step 2: Convert to fraction form
984,514,660.11/1,358,575,279.38 = 538,389,988.11/x - Step 3: Cross multiply
984,514,660.11x = 1,358,575,279.38 × 538,389,988.11 - Step 4: Simplify right side
984,514,660.11x = 731,443,328,511,938,176 - Step 5: Solve for x
x = 731,443,328,511,938,176/984,514,660.11 - Step 6: Final answer
x = 742,948,132.87
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Double scale
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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.