Finding the Fourth Proportional to 1,290,604,521,305.40, 1,781,190,415,722.20 and 734,544,846,030.93
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Solution
The fourth proportional to 1,290,604,521,305.40, 1,781,190,415,722.20 and 734,544,846,030.93 is: 1,013,760,774,946.82
Step by Step Solution
- Step 1: Write the proportion equation
1,290,604,521,305.40 : 1,781,190,415,722.20 = 734,544,846,030.93 : x - Step 2: Convert to fraction form
1,290,604,521,305.40/1,781,190,415,722.20 = 734,544,846,030.93/x - Step 3: Cross multiply
1,290,604,521,305.40x = 1,781,190,415,722.20 × 734,544,846,030.93 - Step 4: Simplify right side
1,290,604,521,305.40x = 1,308,364,239,668,431,648,980,992 - Step 5: Solve for x
x = 1,308,364,239,668,431,648,980,992/1,290,604,521,305.40 - Step 6: Final answer
x = 1,013,760,774,946.82
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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.