Finding the Fourth Proportional to 781,447.68, 1,078,421.28 and 441,909.12
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Solution
The fourth proportional to 781,447.68, 1,078,421.28 and 441,909.12 is: 609,847.86
Step by Step Solution
- Step 1: Write the proportion equation
781,447.68 : 1,078,421.28 = 441,909.12 : x - Step 2: Convert to fraction form
781,447.68/1,078,421.28 = 441,909.12/x - Step 3: Cross multiply
781,447.68x = 1,078,421.28 × 441,909.12 - Step 4: Simplify right side
781,447.68x = 476,564,198,834.07 - Step 5: Solve for x
x = 476,564,198,834.07/781,447.68 - Step 6: Final answer
x = 609,847.86
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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.