Finding the Fourth Proportional to 815,927.42, 1,121,986.95 and 708,309.20
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Solution
The fourth proportional to 815,927.42, 1,121,986.95 and 708,309.20 is: 974,000.46
Step by Step Solution
- Step 1: Write the proportion equation
815,927.42 : 1,121,986.95 = 708,309.20 : x - Step 2: Convert to fraction form
815,927.42/1,121,986.95 = 708,309.20/x - Step 3: Cross multiply
815,927.42x = 1,121,986.95 × 708,309.20 - Step 4: Simplify right side
815,927.42x = 794,713,678,964.94 - Step 5: Solve for x
x = 794,713,678,964.94/815,927.42 - Step 6: Final answer
x = 974,000.46
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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.