Finding the Fourth Proportional to 489,924,992.40, 734,871,742.20 and 162,415,618.80
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Solution
The fourth proportional to 489,924,992.40, 734,871,742.20 and 162,415,618.80 is: 243,618,208.09
Step by Step Solution
- Step 1: Write the proportion equation
489,924,992.40 : 734,871,742.20 = 162,415,618.80 : x - Step 2: Convert to fraction form
489,924,992.40/734,871,742.20 = 162,415,618.80/x - Step 3: Cross multiply
489,924,992.40x = 734,871,742.20 × 162,415,618.80 - Step 4: Simplify right side
489,924,992.40x = 119,354,648,748,047,088 - Step 5: Solve for x
x = 119,354,648,748,047,088/489,924,992.40 - Step 6: Final answer
x = 243,618,208.09
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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.