Finding the Fourth Proportional to 528,009.64, 791,830.14 and 212,384.68
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Solution
The fourth proportional to 528,009.64, 791,830.14 and 212,384.68 is: 318,502.88
Step by Step Solution
- Step 1: Write the proportion equation
528,009.64 : 791,830.14 = 212,384.68 : x - Step 2: Convert to fraction form
528,009.64/791,830.14 = 212,384.68/x - Step 3: Cross multiply
528,009.64x = 791,830.14 × 212,384.68 - Step 4: Simplify right side
528,009.64x = 168,172,590,898.26 - Step 5: Solve for x
x = 168,172,590,898.26/528,009.64 - Step 6: Final answer
x = 318,502.88
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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.