Finding the Fourth Proportional to 1,138,965,083.79, 1,708,275,005.35 and 309,983,325.49
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Solution
The fourth proportional to 1,138,965,083.79, 1,708,275,005.35 and 309,983,325.49 is: 464,928,007.49
Step by Step Solution
- Step 1: Write the proportion equation
1,138,965,083.79 : 1,708,275,005.35 = 309,983,325.49 : x - Step 2: Convert to fraction form
1,138,965,083.79/1,708,275,005.35 = 309,983,325.49/x - Step 3: Cross multiply
1,138,965,083.79x = 1,708,275,005.35 × 309,983,325.49 - Step 4: Simplify right side
1,138,965,083.79x = 529,536,767,009,840,512 - Step 5: Solve for x
x = 529,536,767,009,840,512/1,138,965,083.79 - Step 6: Final answer
x = 464,928,007.49
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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.