Finding the Fourth Proportional to 1,393,215,005.70, 2,087,806,969.35 and 616,224,644.10
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Solution
The fourth proportional to 1,393,215,005.70, 2,087,806,969.35 and 616,224,644.10 is: 923,445,484.99
Step by Step Solution
- Step 1: Write the proportion equation
1,393,215,005.70 : 2,087,806,969.35 = 616,224,644.10 : x - Step 2: Convert to fraction form
1,393,215,005.70/2,087,806,969.35 = 616,224,644.10/x - Step 3: Cross multiply
1,393,215,005.70x = 2,087,806,969.35 × 616,224,644.10 - Step 4: Simplify right side
1,393,215,005.70x = 1,286,558,106,637,203,456 - Step 5: Solve for x
x = 1,286,558,106,637,203,456/1,393,215,005.70 - Step 6: Final answer
x = 923,445,484.99
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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.