Finding the Fourth Proportional to 812,021,747.92, 1,120,560,006.05 and 440,735,807.68
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Solution
The fourth proportional to 812,021,747.92, 1,120,560,006.05 and 440,735,807.68 is: 608,199,128.39
Step by Step Solution
- Step 1: Write the proportion equation
812,021,747.92 : 1,120,560,006.05 = 440,735,807.68 : x - Step 2: Convert to fraction form
812,021,747.92/1,120,560,006.05 = 440,735,807.68/x - Step 3: Cross multiply
812,021,747.92x = 1,120,560,006.05 × 440,735,807.68 - Step 4: Simplify right side
812,021,747.92x = 493,870,919,316,978,112 - Step 5: Solve for x
x = 493,870,919,316,978,112/812,021,747.92 - Step 6: Final answer
x = 608,199,128.39
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.