Finding the Fourth Proportional to 724,885.80, 1,087,328.70 and 689,893.80
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Solution
The fourth proportional to 724,885.80, 1,087,328.70 and 689,893.80 is: 1,034,840.70
Step by Step Solution
- Step 1: Write the proportion equation
724,885.80 : 1,087,328.70 = 689,893.80 : x - Step 2: Convert to fraction form
724,885.80/1,087,328.70 = 689,893.80/x - Step 3: Cross multiply
724,885.80x = 1,087,328.70 × 689,893.80 - Step 4: Simplify right side
724,885.80x = 750,141,328,692.06 - Step 5: Solve for x
x = 750,141,328,692.06/724,885.80 - Step 6: Final answer
x = 1,034,840.70
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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.