Finding the Fourth Proportional to 916,403.12, 1,374,341.16 and 383,911.28
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Solution
The fourth proportional to 916,403.12, 1,374,341.16 and 383,911.28 is: 575,756.52
Step by Step Solution
- Step 1: Write the proportion equation
916,403.12 : 1,374,341.16 = 383,911.28 : x - Step 2: Convert to fraction form
916,403.12/1,374,341.16 = 383,911.28/x - Step 3: Cross multiply
916,403.12x = 1,374,341.16 × 383,911.28 - Step 4: Simplify right side
916,403.12x = 527,625,073,892.29 - Step 5: Solve for x
x = 527,625,073,892.29/916,403.12 - Step 6: Final answer
x = 575,756.52
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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.