Finding the Fourth Proportional to 729,076,591.32, 1,006,128,762.24 and 394,549,129.52
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Solution
The fourth proportional to 729,076,591.32, 1,006,128,762.24 and 394,549,129.52 is: 544,479,458.06
Step by Step Solution
- Step 1: Write the proportion equation
729,076,591.32 : 1,006,128,762.24 = 394,549,129.52 : x - Step 2: Convert to fraction form
729,076,591.32/1,006,128,762.24 = 394,549,129.52/x - Step 3: Cross multiply
729,076,591.32x = 1,006,128,762.24 × 394,549,129.52 - Step 4: Simplify right side
729,076,591.32x = 396,967,227,326,827,008 - Step 5: Solve for x
x = 396,967,227,326,827,008/729,076,591.32 - Step 6: Final answer
x = 544,479,458.06
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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.