Finding the Fourth Proportional to 708,141.57, 1,063,138.28 and 420,478.17
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Solution
The fourth proportional to 708,141.57, 1,063,138.28 and 420,478.17 is: 631,267.04
Step by Step Solution
- Step 1: Write the proportion equation
708,141.57 : 1,063,138.28 = 420,478.17 : x - Step 2: Convert to fraction form
708,141.57/1,063,138.28 = 420,478.17/x - Step 3: Cross multiply
708,141.57x = 1,063,138.28 × 420,478.17 - Step 4: Simplify right side
708,141.57x = 447,026,436,328.96 - Step 5: Solve for x
x = 447,026,436,328.96/708,141.57 - Step 6: Final answer
x = 631,267.04
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.