Finding the Fourth Proportional to 528,681.40, 729,560.80 and 286,958.88
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Solution
The fourth proportional to 528,681.40, 729,560.80 and 286,958.88 is: 395,992.65
Step by Step Solution
- Step 1: Write the proportion equation
528,681.40 : 729,560.80 = 286,958.88 : x - Step 2: Convert to fraction form
528,681.40/729,560.80 = 286,958.88/x - Step 3: Cross multiply
528,681.40x = 729,560.80 × 286,958.88 - Step 4: Simplify right side
528,681.40x = 209,353,950,059.90 - Step 5: Solve for x
x = 209,353,950,059.90/528,681.40 - Step 6: Final answer
x = 395,992.65
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1.5x scale
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.