Finding the Fourth Proportional to 738,124,272.90, 1,106,430,582.15 and 431,258,429.70
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Solution
The fourth proportional to 738,124,272.90, 1,106,430,582.15 and 431,258,429.70 is: 646,446,042.96
Step by Step Solution
- Step 1: Write the proportion equation
738,124,272.90 : 1,106,430,582.15 = 431,258,429.70 : x - Step 2: Convert to fraction form
738,124,272.90/1,106,430,582.15 = 431,258,429.70/x - Step 3: Cross multiply
738,124,272.90x = 1,106,430,582.15 × 431,258,429.70 - Step 4: Simplify right side
738,124,272.90x = 477,157,515,430,065,856 - Step 5: Solve for x
x = 477,157,515,430,065,856/738,124,272.90 - Step 6: Final answer
x = 646,446,042.96
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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.