Finding the Fourth Proportional to 3,889,303,338.70, 5,367,238,869.70 and 2,129,170,746.70
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Solution
The fourth proportional to 3,889,303,338.70, 5,367,238,869.70 and 2,129,170,746.70 is: 2,938,255,774.04
Step by Step Solution
- Step 1: Write the proportion equation
3,889,303,338.70 : 5,367,238,869.70 = 2,129,170,746.70 : x - Step 2: Convert to fraction form
3,889,303,338.70/5,367,238,869.70 = 2,129,170,746.70/x - Step 3: Cross multiply
3,889,303,338.70x = 5,367,238,869.70 × 2,129,170,746.70 - Step 4: Simplify right side
3,889,303,338.70x = 11,427,767,991,916,412,928 - Step 5: Solve for x
x = 11,427,767,991,916,412,928/3,889,303,338.70 - Step 6: Final answer
x = 2,938,255,774.04
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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.