Finding the Fourth Proportional to 1,042,854,923.32, 1,439,263,170.00 and 619,470,257.28
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Solution
The fourth proportional to 1,042,854,923.32, 1,439,263,170.00 and 619,470,257.28 is: 854,942,241.99
Step by Step Solution
- Step 1: Write the proportion equation
1,042,854,923.32 : 1,439,263,170.00 = 619,470,257.28 : x - Step 2: Convert to fraction form
1,042,854,923.32/1,439,263,170.00 = 619,470,257.28/x - Step 3: Cross multiply
1,042,854,923.32x = 1,439,263,170.00 × 619,470,257.28 - Step 4: Simplify right side
1,042,854,923.32x = 891,580,726,210,430,976 - Step 5: Solve for x
x = 891,580,726,210,430,976/1,042,854,923.32 - Step 6: Final answer
x = 854,942,241.99
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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.