Finding the Fourth Proportional to 1,217,995,331.97, 1,683,907,484.58 and 899,953,956.84
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Solution
The fourth proportional to 1,217,995,331.97, 1,683,907,484.58 and 899,953,956.84 is: 1,244,207,727.18
Step by Step Solution
- Step 1: Write the proportion equation
1,217,995,331.97 : 1,683,907,484.58 = 899,953,956.84 : x - Step 2: Convert to fraction form
1,217,995,331.97/1,683,907,484.58 = 899,953,956.84/x - Step 3: Cross multiply
1,217,995,331.97x = 1,683,907,484.58 × 899,953,956.84 - Step 4: Simplify right side
1,217,995,331.97x = 1,515,439,203,700,262,400 - Step 5: Solve for x
x = 1,515,439,203,700,262,400/1,217,995,331.97 - Step 6: Final answer
x = 1,244,207,727.18
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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.