Finding the Fourth Proportional to 528,642.12, 729,526.77 and 286,924.62
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Solution
The fourth proportional to 528,642.12, 729,526.77 and 286,924.62 is: 395,956.33
Step by Step Solution
- Step 1: Write the proportion equation
528,642.12 : 729,526.77 = 286,924.62 : x - Step 2: Convert to fraction form
528,642.12/729,526.77 = 286,924.62/x - Step 3: Cross multiply
528,642.12x = 729,526.77 × 286,924.62 - Step 4: Simplify right side
528,642.12x = 209,319,191,262.08 - Step 5: Solve for x
x = 209,319,191,262.08/528,642.12 - Step 6: Final answer
x = 395,956.33
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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.