Finding the Fourth Proportional to 1,309,210,561,476.50, 1,806,448,542,979.80 and 731,058,122,985.70
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Solution
The fourth proportional to 1,309,210,561,476.50, 1,806,448,542,979.80 and 731,058,122,985.70 is: 1,008,713,892,142.53
Step by Step Solution
- Step 1: Write the proportion equation
1,309,210,561,476.50 : 1,806,448,542,979.80 = 731,058,122,985.70 : x - Step 2: Convert to fraction form
1,309,210,561,476.50/1,806,448,542,979.80 = 731,058,122,985.70/x - Step 3: Cross multiply
1,309,210,561,476.50x = 1,806,448,542,979.80 × 731,058,122,985.70 - Step 4: Simplify right side
1,309,210,561,476.50x = 1,320,618,881,101,065,151,840,256 - Step 5: Solve for x
x = 1,320,618,881,101,065,151,840,256/1,309,210,561,476.50 - Step 6: Final answer
x = 1,008,713,892,142.53
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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.