Finding the Fourth Proportional to 1,408,381,642.80, 2,112,561,966.60 and 425,806,282.80
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Solution
The fourth proportional to 1,408,381,642.80, 2,112,561,966.60 and 425,806,282.80 is: 638,706,250.38
Step by Step Solution
- Step 1: Write the proportion equation
1,408,381,642.80 : 2,112,561,966.60 = 425,806,282.80 : x - Step 2: Convert to fraction form
1,408,381,642.80/2,112,561,966.60 = 425,806,282.80/x - Step 3: Cross multiply
1,408,381,642.80x = 2,112,561,966.60 × 425,806,282.80 - Step 4: Simplify right side
1,408,381,642.80x = 899,542,158,182,603,776 - Step 5: Solve for x
x = 899,542,158,182,603,776/1,408,381,642.80 - Step 6: Final answer
x = 638,706,250.38
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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.