Finding the Fourth Proportional to 579,444,259.20, 869,166,388.80 and 443,395,363.20
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Solution
The fourth proportional to 579,444,259.20, 869,166,388.80 and 443,395,363.20 is: 665,093,044.80
Step by Step Solution
- Step 1: Write the proportion equation
579,444,259.20 : 869,166,388.80 = 443,395,363.20 : x - Step 2: Convert to fraction form
579,444,259.20/869,166,388.80 = 443,395,363.20/x - Step 3: Cross multiply
579,444,259.20x = 869,166,388.80 × 443,395,363.20 - Step 4: Simplify right side
579,444,259.20x = 385,384,346,643,208,384 - Step 5: Solve for x
x = 385,384,346,643,208,384/579,444,259.20 - Step 6: Final answer
x = 665,093,044.80
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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.