Finding the Fourth Proportional to 680,804,918.80, 1,021,207,378.20 and 559,872,566.80
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Solution
The fourth proportional to 680,804,918.80, 1,021,207,378.20 and 559,872,566.80 is: 839,808,850.20
Step by Step Solution
- Step 1: Write the proportion equation
680,804,918.80 : 1,021,207,378.20 = 559,872,566.80 : x - Step 2: Convert to fraction form
680,804,918.80/1,021,207,378.20 = 559,872,566.80/x - Step 3: Cross multiply
680,804,918.80x = 1,021,207,378.20 × 559,872,566.80 - Step 4: Simplify right side
680,804,918.80x = 571,745,996,067,932,352 - Step 5: Solve for x
x = 571,745,996,067,932,352/680,804,918.80 - Step 6: Final answer
x = 839,808,850.20
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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.