Finding the Fourth Proportional to 645,776.68, 891,157.92 and 373,856.08
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Solution
The fourth proportional to 645,776.68, 891,157.92 and 373,856.08 is: 515,913.34
Step by Step Solution
- Step 1: Write the proportion equation
645,776.68 : 891,157.92 = 373,856.08 : x - Step 2: Convert to fraction form
645,776.68/891,157.92 = 373,856.08/x - Step 3: Cross multiply
645,776.68x = 891,157.92 × 373,856.08 - Step 4: Simplify right side
645,776.68x = 333,164,806,632.15 - Step 5: Solve for x
x = 333,164,806,632.15/645,776.68 - Step 6: Final answer
x = 515,913.34
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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.