Finding the Fourth Proportional to 687,230.79, 948,430.44 and 381,365.07
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Solution
The fourth proportional to 687,230.79, 948,430.44 and 381,365.07 is: 526,312.63
Step by Step Solution
- Step 1: Write the proportion equation
687,230.79 : 948,430.44 = 381,365.07 : x - Step 2: Convert to fraction form
687,230.79/948,430.44 = 381,365.07/x - Step 3: Cross multiply
687,230.79x = 948,430.44 × 381,365.07 - Step 4: Simplify right side
687,230.79x = 361,698,241,140.73 - Step 5: Solve for x
x = 361,698,241,140.73/687,230.79 - Step 6: Final answer
x = 526,312.63
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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.