Finding the Fourth Proportional to 668,115,940.79, 1,000,988,207.26 and 279,082,626.77
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Solution
The fourth proportional to 668,115,940.79, 1,000,988,207.26 and 279,082,626.77 is: 418,128,652.81
Step by Step Solution
- Step 1: Write the proportion equation
668,115,940.79 : 1,000,988,207.26 = 279,082,626.77 : x - Step 2: Convert to fraction form
668,115,940.79/1,000,988,207.26 = 279,082,626.77/x - Step 3: Cross multiply
668,115,940.79x = 1,000,988,207.26 × 279,082,626.77 - Step 4: Simplify right side
668,115,940.79x = 279,358,418,246,518,560 - Step 5: Solve for x
x = 279,358,418,246,518,560/668,115,940.79 - Step 6: Final answer
x = 418,128,652.81
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.