Finding the Fourth Proportional to 1,241,229,187.78, 1,712,908,169.41 and 684,332,207.62
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Solution
The fourth proportional to 1,241,229,187.78, 1,712,908,169.41 and 684,332,207.62 is: 944,385,002.03
Step by Step Solution
- Step 1: Write the proportion equation
1,241,229,187.78 : 1,712,908,169.41 = 684,332,207.62 : x - Step 2: Convert to fraction form
1,241,229,187.78/1,712,908,169.41 = 684,332,207.62/x - Step 3: Cross multiply
1,241,229,187.78x = 1,712,908,169.41 × 684,332,207.62 - Step 4: Simplify right side
1,241,229,187.78x = 1,172,198,229,016,685,056 - Step 5: Solve for x
x = 1,172,198,229,016,685,056/1,241,229,187.78 - Step 6: Final answer
x = 944,385,002.03
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.