Finding the Fourth Proportional to 863,491,372.92, 1,191,618,078.30 and 467,014,392.99
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Solution
The fourth proportional to 863,491,372.92, 1,191,618,078.30 and 467,014,392.99 is: 644,479,853.49
Step by Step Solution
- Step 1: Write the proportion equation
863,491,372.92 : 1,191,618,078.30 = 467,014,392.99 : x - Step 2: Convert to fraction form
863,491,372.92/1,191,618,078.30 = 467,014,392.99/x - Step 3: Cross multiply
863,491,372.92x = 1,191,618,078.30 × 467,014,392.99 - Step 4: Simplify right side
863,491,372.92x = 556,502,793,513,184,768 - Step 5: Solve for x
x = 556,502,793,513,184,768/863,491,372.92 - Step 6: Final answer
x = 644,479,853.49
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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.