Finding the Fourth Proportional to 872,437,165.20, 1,306,388,266.20 and 689,526,982.80
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Solution
The fourth proportional to 872,437,165.20, 1,306,388,266.20 and 689,526,982.80 is: 1,032,498,379.81
Step by Step Solution
- Step 1: Write the proportion equation
872,437,165.20 : 1,306,388,266.20 = 689,526,982.80 : x - Step 2: Convert to fraction form
872,437,165.20/1,306,388,266.20 = 689,526,982.80/x - Step 3: Cross multiply
872,437,165.20x = 1,306,388,266.20 × 689,526,982.80 - Step 4: Simplify right side
872,437,165.20x = 900,789,959,558,209,152 - Step 5: Solve for x
x = 900,789,959,558,209,152/872,437,165.20 - Step 6: Final answer
x = 1,032,498,379.81
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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.