Finding the Fourth Proportional to 578,408.80, 866,461.20 and 509,135.20
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Solution
The fourth proportional to 578,408.80, 866,461.20 and 509,135.20 is: 762,688.77
Step by Step Solution
- Step 1: Write the proportion equation
578,408.80 : 866,461.20 = 509,135.20 : x - Step 2: Convert to fraction form
578,408.80/866,461.20 = 509,135.20/x - Step 3: Cross multiply
578,408.80x = 866,461.20 × 509,135.20 - Step 4: Simplify right side
578,408.80x = 441,145,896,354.24 - Step 5: Solve for x
x = 441,145,896,354.24/578,408.80 - Step 6: Final answer
x = 762,688.77
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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.