Finding the Fourth Proportional to 523,523,305.79, 722,461,985.77 and 288,577,889.80
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Solution
The fourth proportional to 523,523,305.79, 722,461,985.77 and 288,577,889.80 is: 398,237,390.79
Step by Step Solution
- Step 1: Write the proportion equation
523,523,305.79 : 722,461,985.77 = 288,577,889.80 : x - Step 2: Convert to fraction form
523,523,305.79/722,461,985.77 = 288,577,889.80/x - Step 3: Cross multiply
523,523,305.79x = 722,461,985.77 × 288,577,889.80 - Step 4: Simplify right side
523,523,305.79x = 208,486,555,314,224,224 - Step 5: Solve for x
x = 208,486,555,314,224,224/523,523,305.79 - Step 6: Final answer
x = 398,237,390.79
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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.