Finding the Fourth Proportional to 1,293,248,873.20, 1,939,873,309.80 and 749,053,289.20
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Solution
The fourth proportional to 1,293,248,873.20, 1,939,873,309.80 and 749,053,289.20 is: 1,123,579,933.80
Step by Step Solution
- Step 1: Write the proportion equation
1,293,248,873.20 : 1,939,873,309.80 = 749,053,289.20 : x - Step 2: Convert to fraction form
1,293,248,873.20/1,939,873,309.80 = 749,053,289.20/x - Step 3: Cross multiply
1,293,248,873.20x = 1,939,873,309.80 × 749,053,289.20 - Step 4: Simplify right side
1,293,248,873.20x = 1,453,068,483,336,980,736 - Step 5: Solve for x
x = 1,453,068,483,336,980,736/1,293,248,873.20 - Step 6: Final answer
x = 1,123,579,933.80
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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.