Finding the Fourth Proportional to 612,688.20, 919,907.10 and 346,967.70
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Solution
The fourth proportional to 612,688.20, 919,907.10 and 346,967.70 is: 520,946.95
Step by Step Solution
- Step 1: Write the proportion equation
612,688.20 : 919,907.10 = 346,967.70 : x - Step 2: Convert to fraction form
612,688.20/919,907.10 = 346,967.70/x - Step 3: Cross multiply
612,688.20x = 919,907.10 × 346,967.70 - Step 4: Simplify right side
612,688.20x = 319,178,050,700.67 - Step 5: Solve for x
x = 319,178,050,700.67/612,688.20 - Step 6: Final answer
x = 520,946.95
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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.