Finding the Fourth Proportional to 1,128,535,828.05, 1,692,133,132.20 and 429,079,163.49
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Solution
The fourth proportional to 1,128,535,828.05, 1,692,133,132.20 and 429,079,163.49 is: 643,363,773.51
Step by Step Solution
- Step 1: Write the proportion equation
1,128,535,828.05 : 1,692,133,132.20 = 429,079,163.49 : x - Step 2: Convert to fraction form
1,128,535,828.05/1,692,133,132.20 = 429,079,163.49/x - Step 3: Cross multiply
1,128,535,828.05x = 1,692,133,132.20 × 429,079,163.49 - Step 4: Simplify right side
1,128,535,828.05x = 726,059,068,878,089,600 - Step 5: Solve for x
x = 726,059,068,878,089,600/1,128,535,828.05 - Step 6: Final answer
x = 643,363,773.51
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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.