Finding the Fourth Proportional to 611,219.16, 917,432.12 and 458,886.42
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Solution
The fourth proportional to 611,219.16, 917,432.12 and 458,886.42 is: 688,782.63
Step by Step Solution
- Step 1: Write the proportion equation
611,219.16 : 917,432.12 = 458,886.42 : x - Step 2: Convert to fraction form
611,219.16/917,432.12 = 458,886.42/x - Step 3: Cross multiply
611,219.16x = 917,432.12 × 458,886.42 - Step 4: Simplify right side
611,219.16x = 420,997,142,287.03 - Step 5: Solve for x
x = 420,997,142,287.03/611,219.16 - Step 6: Final answer
x = 688,782.63
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1.5x scale
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.