Finding the Fourth Proportional to 855,479,936.70, 1,283,219,905.05 and 310,239,258.30
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Solution
The fourth proportional to 855,479,936.70, 1,283,219,905.05 and 310,239,258.30 is: 465,358,887.45
Step by Step Solution
- Step 1: Write the proportion equation
855,479,936.70 : 1,283,219,905.05 = 310,239,258.30 : x - Step 2: Convert to fraction form
855,479,936.70/1,283,219,905.05 = 310,239,258.30/x - Step 3: Cross multiply
855,479,936.70x = 1,283,219,905.05 × 310,239,258.30 - Step 4: Simplify right side
855,479,936.70x = 398,105,191,578,508,416 - Step 5: Solve for x
x = 398,105,191,578,508,416/855,479,936.70 - Step 6: Final answer
x = 465,358,887.45
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Similar ratio
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1.5x scale
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.