Finding the Fourth Proportional to 743,756,090.40, 1,115,634,135.60 and 698,406,458.40
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Solution
The fourth proportional to 743,756,090.40, 1,115,634,135.60 and 698,406,458.40 is: 1,047,609,687.60
Step by Step Solution
- Step 1: Write the proportion equation
743,756,090.40 : 1,115,634,135.60 = 698,406,458.40 : x - Step 2: Convert to fraction form
743,756,090.40/1,115,634,135.60 = 698,406,458.40/x - Step 3: Cross multiply
743,756,090.40x = 1,115,634,135.60 × 698,406,458.40 - Step 4: Simplify right side
743,756,090.40x = 779,166,085,514,541,312 - Step 5: Solve for x
x = 779,166,085,514,541,312/743,756,090.40 - Step 6: Final answer
x = 1,047,609,687.60
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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.