Finding the Fourth Proportional to 530,423.21, 731,983.91 and 288,707.44
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Solution
The fourth proportional to 530,423.21, 731,983.91 and 288,707.44 is: 398,416.20
Step by Step Solution
- Step 1: Write the proportion equation
530,423.21 : 731,983.91 = 288,707.44 : x - Step 2: Convert to fraction form
530,423.21/731,983.91 = 288,707.44/x - Step 3: Cross multiply
530,423.21x = 731,983.91 × 288,707.44 - Step 4: Simplify right side
530,423.21x = 211,329,199,669.10 - Step 5: Solve for x
x = 211,329,199,669.10/530,423.21 - Step 6: Final answer
x = 398,416.20
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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.