Finding the Fourth Proportional to 1,290,604,521,305.70, 1,781,190,415,722.60 and 734,544,846,031.29
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Solution
The fourth proportional to 1,290,604,521,305.70, 1,781,190,415,722.60 and 734,544,846,031.29 is: 1,013,760,774,947.31
Step by Step Solution
- Step 1: Write the proportion equation
1,290,604,521,305.70 : 1,781,190,415,722.60 = 734,544,846,031.29 : x - Step 2: Convert to fraction form
1,290,604,521,305.70/1,781,190,415,722.60 = 734,544,846,031.29/x - Step 3: Cross multiply
1,290,604,521,305.70x = 1,781,190,415,722.60 × 734,544,846,031.29 - Step 4: Simplify right side
1,290,604,521,305.70x = 1,308,364,239,669,366,878,109,696 - Step 5: Solve for x
x = 1,308,364,239,669,366,878,109,696/1,290,604,521,305.70 - Step 6: Final answer
x = 1,013,760,774,947.31
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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.