Finding the Fourth Proportional to 919,307,595.48, 1,378,952,305.56 and 421,176,814.08
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Solution
The fourth proportional to 919,307,595.48, 1,378,952,305.56 and 421,176,814.08 is: 631,761,057.65
Step by Step Solution
- Step 1: Write the proportion equation
919,307,595.48 : 1,378,952,305.56 = 421,176,814.08 : x - Step 2: Convert to fraction form
919,307,595.48/1,378,952,305.56 = 421,176,814.08/x - Step 3: Cross multiply
919,307,595.48x = 1,378,952,305.56 × 421,176,814.08 - Step 4: Simplify right side
919,307,595.48x = 580,782,738,824,031,360 - Step 5: Solve for x
x = 580,782,738,824,031,360/919,307,595.48 - Step 6: Final answer
x = 631,761,057.65
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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.